The Bolt,machine, cataloged under National Stock Number 5306-01-223-6667, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-223-6667 |
| Primary Part Number | 1376-16-221 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Head Height | 5.5 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 35.00 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 32.5 MILLIMETERS MINIMUM AND 35.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 113000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 1376-16-221 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| 1376-16-221 | Leonardo S.p.a. - Electronics Division - Defence Business Area (ITA) |
| 5338740-088L | Century Fasteners Corp. Dba Century Fasteners Corp (USA) |
| 5338740-088L | H-K Connecticut Holding Company (USA) |
| Reference | Meaning |
|---|---|
| 5338740-088L | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 5306PL0821711 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5338740-088L | 5/9 Secondary reference Metric and Multistandard Components Corp |
| 5338740-088L | 5/9 Secondary reference North American Bolt and Screw Co Inc |
NSN 5306-01-223-6667 is a Bolt,machine, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-223-6667 has 4 manufacturer part numbers on file: 1376-16-221 (Bae Systems Land & Armaments L.p.), 1376-16-221 (Leonardo S.p.a. - Electronics Division - Defence Business Area), 5338740-088L (Century Fasteners Corp. Dba Century Fasteners Corp), 5338740-088L (H-K Connecticut Holding Company).
Key specifications for 1376-16-221: Head Height: 5.5 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 35.00 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 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.