The Bolt,shear, cataloged under National Stock Number 5306-01-043-6871, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-043-6871 |
| Primary Part Number | BM17020-4-18 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 1.402 INCHES MINIMUM AND 1.449 INCHES MAXIMUM IN |
| Thread Length | 0.267 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN |
| Grip Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GB511B4-18 | Northrop Grumman Systems Corporation (USA) |
| VS3071-4F18 | Howmet Global Fastening Systems Inc (USA) |
| BM17020-4-18 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BM17020-4-18A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| VS3071-4F18 | 5/9 Secondary reference U.S. Government activity |
| EWSB22D4-18 | 5/2 Secondary reference U.S. Government activity |
| EWSB22D4-18 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| BM17020-4-18 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-043-6871 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-6871 has 3 manufacturer part numbers on file: GB511B4-18 (Northrop Grumman Systems Corporation), VS3071-4F18 (Howmet Global Fastening Systems Inc), BM17020-4-18 (Huck International, Inc).
Key specifications for BM17020-4-18: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 1.402 INCHES MINIMUM AND 1.449 INCHES MAXIMUM IN; Thread Length: 0.267 INCHES MINIMUM AND 0.334 INCHES MAXIMUM IN; Grip Length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.