The Bolt,machine, cataloged under National Stock Number 5306-00-916-6503, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Christie Brown and Co Ltd. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-916-6503 |
| Primary Part Number | NAS1003-31A |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Christie Brown and Co Ltd |
| Status | ACTIVE |
| Head Height | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Fastener Length | 2.404 INCHES MINIMUM AND 2.434 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.451 INCHES MINIMUM AND 0.511 INCHES MAXIMUM IN |
| Hardness Rating | 248.0 BRINELL STANDARD MINIMUM AND 341.0 BRINELL STANDARD MAXIMUM OVERALL |
| Material Document and Classification | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1003 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.923 INCHES MINIMUM AND 1.953 INCHES MAXIMUM IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| NAS1003-31A PRIMARY | Christie Brown and Co Ltd (CAN) |
| NAS1003-31A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1003-31A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1003-31A | Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp (USA) |
| NAS1003-31A | Nor-Cal Supply Co (USA) |
| NAS1003-31A | Plastic and Metal Products Corporation (USA) |
| NAS1003-31A PRIMARY | Qualified Air Components Inc. (USA) |
| NAS1003-31A PRIMARY | Huck International, Inc (USA) |
| NAS1003-31A PRIMARY | Hi-Shear Corporation (USA) |
| NAS1003-31A PRIMARY | Apcom Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1003-31A | 5/9 Secondary reference Collins Engineering Corp |
| NAS1003-31A | 3/2 Design control — primary reference U.S. Government activity |
| NAS1003-31A | 5/9 Secondary reference Air Industries Co Inc |
| NAS1003-31A | 3/2 Design control — primary reference U.S. Government activity |
| NAS1003-32A | 5/9 Secondary reference U.S. Government activity |
| NAS1003-31A | 5/9 Secondary reference U.S. Government activity |
| NAS1003-31A | 5/9 Secondary reference F and C Sales Inc |
| NAS1003-31A | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
NSN 5306-00-916-6503 is a Bolt,machine, manufactured by Christie Brown and Co Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-916-6503 has 10 manufacturer part numbers on file: NAS1003-31A (Christie Brown and Co Ltd), NAS1003-31A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1003-31A (Fastener Innovation Technology, Inc. Dba F I T), NAS1003-31A (Accurate Precision Fastener Corp. Div Accurate Precision Fasteners Corp), NAS1003-31A (Nor-Cal Supply Co) and 5 more.
Key specifications for NAS1003-31A: Head Height: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN; Fastener Length: 2.404 INCHES MINIMUM AND 2.434 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.451 INCHES MINIMUM AND 0.511 INCHES MAXIMUM IN. 19 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.