The Bolt,shear, cataloged under National Stock Number 5306-00-947-2181, 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 18 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-947-2181 |
| Primary Part Number | BM55132-7-20A |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.257 INCHES NOMINAL IN |
| Fastener Length | 1.716 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.466 INCHES MINIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SPS- M-107 FSCM 56878 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.250 INCHES NOMINAL IN |
| Width Between Flats | 0.678 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Grip Diameter | 0.4358 INCHES MINIMUM AND 0.4367 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BM55132-7-20A | Huck International, Inc (USA) |
| 202-15520-7-20 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 202-15520-7-20 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 202-15520-7-20 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| EWSB22-7A20 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 202-15520-7-20 | 5/2 Secondary reference U.S. Government activity |
| 202-15520-7-20 | 7/2 Vendor item drawing reference U.S. Government activity |
| 202-15520-7-20 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM55132-7-20A | 5/9 Secondary reference U.S. Government activity |
| EWSB22-7A20 | 3/2 Design control — primary reference U.S. Government activity |
| 202-15520-7-20 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-947-2181 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-947-2181 has 4 manufacturer part numbers on file: BM55132-7-20A (Huck International, Inc), 202-15520-7-20 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 202-15520-7-20 (Sps Technologies, Llc Dba PB Fasteners), 202-15520-7-20 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for BM55132-7-20A: Head Height: 0.257 INCHES NOMINAL IN; Fastener Length: 1.716 INCHES NOMINAL IN; Surface Treatment Document and Classification: NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.466 INCHES MINIMUM IN. 18 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.