The Bolt,tee Head, cataloged under National Stock Number 5306-01-287-2259, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 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 | 5306-01-287-2259 |
| Primary Part Number | 12357408 |
| Item Name | Bolt,tee Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Fastener Length | 6.380 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2 CL FE/ZN5 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 3.310 INCHES NOMINAL IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.312 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | ASTM A148 GRADE 150-135 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 2.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Head Length | 7.000 INCHES NOMINAL IN |
| Width Between Flats | 2.000 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OR STEEL COMP 4340 OVERALL |
| Thread Series Designator | UN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 5.440 INCHES MINIMUM AND 5.470 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| 12357408 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-01-287-2259 is a Bolt,tee Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-287-2259 has 1 manufacturer part number on file: 12357408 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12357408: Fastener Length: 6.380 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2 CL FE/ZN5 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Thread Length: 3.310 INCHES NOMINAL IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM 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.