The Bolt,shoulder, cataloged under National Stock Number 5306-01-448-9761, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-448-9761 |
| Primary Part Number | AIC4431-3 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.090 INCHES NOMINAL IN |
| Head Height | 0.600 INCHES NOMINAL IN |
| Fastener Length | 4.067 INCHES MINIMUM AND 4.097 INCHES MAXIMUM IN |
| Shoulder Length | 2.940 INCHES NOMINAL FIRST SHOULDER IN |
| Extended Washer Diameter | 1.153 INCHES MINIMUM AND 1.163 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.6855 INCHES MINIMUM AND 0.6865 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.142 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-C-8837 TY2 CL2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Head Minor Diameter | 0.673 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| AIC4431-3 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| VS3643-1 | 5/2 Secondary reference U.S. Government activity |
| C9771-3 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5306-01-448-9761 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-448-9761 has 1 manufacturer part number on file: AIC4431-3 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for AIC4431-3: Extended Washer Thickness: 0.090 INCHES NOMINAL IN; Head Height: 0.600 INCHES NOMINAL IN; Fastener Length: 4.067 INCHES MINIMUM AND 4.097 INCHES MAXIMUM IN; Shoulder Length: 2.940 INCHES NOMINAL FIRST SHOULDER IN. 17 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.