The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-700-3940, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-700-3940 |
| Primary Part Number | AS3531-3-12 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Extended Washer Thickness | 0.380 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Head Height | 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN |
| Fastener Length | 1.191 INCHES MINIMUM AND 1.211 INCHES MAXIMUM IN |
| Extended Washer Diameter | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Thread Length | 0.451 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.7500 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Width Between Flats | 0.8125 INCHES NOMINAL IN |
| Grip Diameter | 0.7485 INCHES MINIMUM AND 0.7495 INCHES MAXIMUM IN |
| Internal Drive Style | DOUBLE HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| 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 |
|---|---|
| AS3531-3-12 PRIMARY | Sae International Dba Sae International (USA) |
NSN 5306-01-700-3940 is a Bolt,close Tolerance, manufactured by Sae International Dba Sae International, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-700-3940 has 1 manufacturer part number on file: AS3531-3-12 (Sae International Dba Sae International).
Key specifications for AS3531-3-12: Extended Washer Thickness: 0.380 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Head Height: 0.701 INCHES MINIMUM AND 0.721 INCHES MAXIMUM IN; Fastener Length: 1.191 INCHES MINIMUM AND 1.211 INCHES MAXIMUM IN; Extended Washer Diameter: 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM 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.