The Bolt,shear, cataloged under National Stock Number 5306-00-221-1320, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-221-1320 |
| Primary Part Number | 253959 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| Status | ACTIVE |
| Extended Washer Thickness | 0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Head Height | 0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN |
| Fastener Length | 4.322 INCHES MINIMUM AND 4.342 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | WK-151267 TY 2 FSCM 33525 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.645 INCHES NOMINAL IN |
| Thread Length | 0.687 INCHES MINIMUM AND 0.727 INCHES MAXIMUM IN |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.615 INCHES MINIMUM AND 3.635 INCHES MAXIMUM IN |
| Width Between Flats | 0.497 INCHES NOMINAL IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 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 |
|---|---|
| 253959 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 253959 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 5306-00-221-1320 is a Bolt,shear, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-221-1320 has 1 manufacturer part number on file: 253959 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-003-5690. Verify interchangeability with system specifications before substitution.
Key specifications for 253959: Extended Washer Thickness: 0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN; Head Height: 0.395 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN; Fastener Length: 4.322 INCHES MINIMUM AND 4.342 INCHES MAXIMUM IN; Surface Treatment Document and Classification: WK-151267 TY 2 FSCM 33525 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 20 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.