Ball Lock Pins with Button Handle single acting - comply with NAS / MS17984
EH 4210.
Ball Lock Pins according to MS17984 / NAS1333 - 1343 are used for quick fastening, locking, adjusting, changing and securing. Quickly and easily unlockable for frequently repeated connections.
Ball Lock Pins (Quick Release Pins) are produced according to Aviation Norm MS / NAS and tested to NAS 1332.
Surface treatment:
- All stainless steel parts are passivated according AMS2700
- All alluminium parts alloy anodized according MIL-A-8625
Heat treatment:
- Body: Rc. 40 min. (AMS2759, Condition H900)
- Spindle: Rc. 40 min. (AMS2759, Condition H900)
- Ball: Rc. 58-62 min. (AMS2759)
Your selection resulted in 181 hits
Nominal diameter A [in]
Clamping length L +0.02 0 [in]
Shearing resistance, two-shear min. [lbf]
Standard description
More details
Article-No.
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Price
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Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
3.2 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C832 / NAS1338A3C32D
Article-No.:
4210.F32
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 3.2 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 119 g
- Standard description: MS17984C832 / NAS1338A3C32D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
3.3 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C833 / NAS1338A3C33D
Article-No.:
4210.F33
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 3.3 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 121 g
- Standard description: MS17984C833 / NAS1338A3C33D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
3.6 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C836 / NAS1338A3C36D
Article-No.:
4210.F36
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 3.6 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 129 g
- Standard description: MS17984C836 / NAS1338A3C36D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
3.9 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C839 / NAS1338A3C39D
Article-No.:
4210.F39
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 3.9 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 136 g
- Standard description: MS17984C839 / NAS1338A3C39D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
4 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C840 / NAS1338A3C40D
Article-No.:
4210.F40
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 4 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 138 g
- Standard description: MS17984C840 / NAS1338A3C40D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
4.1 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C841 / NAS1338A3C41D
Article-No.:
4210.F41
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 4.1 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 141 g
- Standard description: MS17984C841 / NAS1338A3C41D
Nominal diameter A [in]:
1/2 in
Clamping length L +0.02 0 [in]:
6 in
Shearing resistance, two-shear min. [lbf]:
36,900 lbf
Standard description:
MS17984C860 / NAS1338A3C60D
Article-No.:
4210.F60
- Nominal diameter A: 1/2 in
- A min.: 0.497 in
- A max.: 0.4985 in
- Clamping length L +0.02 0: 6 in
- B ±0.005: 0.594 in
- C 0 -0.04: 0.46 in
- D max.: 0.56 in
- E max.: 0.72 in
- F max.: 1.4 in
- G max.: 1.19 in
- H min.: 0.72 in
- Location hole max.: 0.505 in
- Shearing resistance, two-shear min.: 36,900 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 187 g
- Standard description: MS17984C860 / NAS1338A3C60D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
1.3 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C913 / NAS1339A3C13D
Article-No.:
4210.G13
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 1.3 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 90.2 g
- Standard description: MS17984C913 / NAS1339A3C13D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
1.5 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C915 / NAS1339A3C15D
Article-No.:
4210.G15
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 1.5 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 96.4 g
- Standard description: MS17984C915 / NAS1339A3C15D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
1.7 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C917 / NAS1339A3C17D
Article-No.:
4210.G17
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 1.7 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 103 g
- Standard description: MS17984C917 / NAS1339A3C17D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
2 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C920 / NAS1339A3C20D
Article-No.:
4210.G20
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 2 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 112 g
- Standard description: MS17984C920 / NAS1339A3C20D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
2.5 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C925 / NAS1339A3C25D
Article-No.:
4210.G25
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 2.5 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 127 g
- Standard description: MS17984C925 / NAS1339A3C25D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
3.4 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C934 / NAS1339A3C34D
Article-No.:
4210.G34
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 3.4 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 155 g
- Standard description: MS17984C934 / NAS1339A3C34D
Nominal diameter A [in]:
9/16 in
Clamping length L +0.02 0 [in]:
4 in
Shearing resistance, two-shear min. [lbf]:
46,700 lbf
Standard description:
MS17984C940 / NAS1339A3C40D
Article-No.:
4210.G40
- Nominal diameter A: 9/16 in
- A min.: 0.5595 in
- A max.: 0.561 in
- Clamping length L +0.02 0: 4 in
- B ±0.005: 0.666 in
- C 0 -0.04: 0.51 in
- D max.: 0.56 in
- E max.: 0.77 in
- F max.: 1.65 in
- G max.: 1.41 in
- H min.: 0.95 in
- Location hole max.: 0.5675 in
- Shearing resistance, two-shear min.: 46,700 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 174 g
- Standard description: MS17984C940 / NAS1339A3C40D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
1.4 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1014 / NAS1340A3C14D
Article-No.:
4210.H14
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 1.4 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 131 g
- Standard description: MS17984C1014 / NAS1340A3C14D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
1.5 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1015 / NAS1340A3C15D
Article-No.:
4210.H15
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 1.5 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 134 g
- Standard description: MS17984C1015 / NAS1340A3C15D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
1.7 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1017 / NAS1340A3C17D
Article-No.:
4210.H17
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 1.7 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 142 g
- Standard description: MS17984C1017 / NAS1340A3C17D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
1.8 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1018 / NAS1340A3C18D
Article-No.:
4210.H18
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 1.8 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 146 g
- Standard description: MS17984C1018 / NAS1340A3C18D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
2 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1020 / NAS1340A3C20D
Article-No.:
4210.H20
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 2 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 115 g
- Standard description: MS17984C1020 / NAS1340A3C20D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
3.2 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1032 / NAS1340A3C32D
Article-No.:
4210.H32
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 3.2 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 200 g
- Standard description: MS17984C1032 / NAS1340A3C32D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
3.7 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1037 / NAS1340A3C37D
Article-No.:
4210.H37
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 3.7 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 219 g
- Standard description: MS17984C1037 / NAS1340A3C37D
Nominal diameter A [in]:
5/8 in
Clamping length L +0.02 0 [in]:
4 in
Shearing resistance, two-shear min. [lbf]:
57,800 lbf
Standard description:
MS17984C1040 / NAS1340A3C40D
Article-No.:
4210.H40
- Nominal diameter A: 5/8 in
- A min.: 0.622 in
- A max.: 0.6235 in
- Clamping length L +0.02 0: 4 in
- B ±0.005: 0.75 in
- C 0 -0.04: 0.58 in
- D max.: 0.58 in
- E max.: 0.87 in
- F max.: 1.7 in
- G max.: 0.95 in
- H min.: 0.95 in
- Location hole max.: 0.63 in
- Shearing resistance, two-shear min.: 57,800 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 231 g
- Standard description: MS17984C1040 / NAS1340A3C40D
Nominal diameter A [in]:
3/4 in
Clamping length L +0.02 0 [in]:
1.8 in
Shearing resistance, two-shear min. [lbf]:
83,200 lbf
Standard description:
MS17984C1218 / NAS1341A3C18D
Article-No.:
4210.K18
- Nominal diameter A: 3/4 in
- A min.: 0.747 in
- A max.: 0.7485 in
- Clamping length L +0.02 0: 1.8 in
- B ±0.005: 0.887 in
- C 0 -0.04: 0.67 in
- D max.: 0.7 in
- E max.: 1 in
- F max.: 1.9 in
- G max.: 1.68 in
- H min.: 1.14 in
- Location hole max.: 0.757 in
- Shearing resistance, two-shear min.: 83,200 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 207 g
- Standard description: MS17984C1218 / NAS1341A3C18D
Nominal diameter A [in]:
3/4 in
Clamping length L +0.02 0 [in]:
2 in
Shearing resistance, two-shear min. [lbf]:
83,200 lbf
Standard description:
MS17984C1220 / NAS1341A3C20D
Article-No.:
4210.K20
- Nominal diameter A: 3/4 in
- A min.: 0.747 in
- A max.: 0.7485 in
- Clamping length L +0.02 0: 2 in
- B ±0.005: 0.887 in
- C 0 -0.04: 0.67 in
- D max.: 0.7 in
- E max.: 1 in
- F max.: 1.9 in
- G max.: 1.68 in
- H min.: 1.14 in
- Location hole max.: 0.757 in
- Shearing resistance, two-shear min.: 83,200 lbf
- Operating temperature range min.: -65 °F
- Operating temperature range max.: 200 °F
- Weight: 218 g
- Standard description: MS17984C1220 / NAS1341A3C20D
Material
Body
- Stainless steel, precipitation-hardened, passivated - CRES 17-4PH (specification AMS5643)
Spindle
- Stainless steel, precipitation-hardened, passivated - CRES 17-4PH (specification AMS5643)
Spring
- Stainless steel, passivated - CRES 302 (specification ASTM-A-313)
Handle
- Aluminium, black anodised - Alum.Alloy A380 (specification ASTM B85/B85)
- From 3/8" - Aluminium, black anodised - Alum.Alloy 6061-T6 (specification AMS-QQ-A200/8)
Attaching ring
- Stainless steel, passivated - CRES 302 (specification ASTM A-313/A313M)
Press button
- Stainless steel, passivated - CRES 303 (specification ASTM A484/484M)
Ball
- Stainless steel, precipitation-hardened, passivated - CRES 440C (specification AMS5630)
Notes
All further dimensions are available on request.
Other diameter / length combinations not listed which comply with the standard can be produced at short notice on customer request.
Customized design on request.
- This product is manufactured in INCH dimensions.
Operation
Ball lock pins single acting are self-locking and require a push of the button to release the balls.
Further products
- Ball Lock Pins, self-locking, with button handle
- Retaining Cables
- Ball Lock Pins with T-Handle, single acting - comply with NAS / MS17985
- Ball Lock Pins with L-handle, single acting - comply with NAS / MS17986
- Ball Lock Pins with Ring Handle, single acting - comply with NAS / MS17987
- Warning Streamers, according to NAS1756
- Warning Streamers, with lettering "Remove Before Flight", with reflector
- Warning Streamers, with lettering "Remove Before Flight"
- Warning Streamers, woven, embroidered with lettering "Remove Before Flight"
- Lanyards, according to DAN80
- Lanyards, according to NSA5732
RoHS compliant
Compliant according to Directive 2011/65/EU and Directive 2015/863.
Does not contain SVHC substances
No SVHC substances with more than 0.1% w/w contained - SVHC list [REACH] as of 27.06.2024.
Does not contain Proposition 65 substances
No Proposition 65 substances included.
https://www.P65Warnings.ca.gov/
Free from Conflict Minerals
This product does not contain any substances designated as "conflict minerals" such as tantalum, tin, gold or tungsten from the Democratic Republic of Congo or adjacent countries.