The Bolt,tee Head, cataloged under National Stock Number 5306-01-049-9128, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Clampco Products, Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-049-9128 |
| Primary Part Number | 31-2-1 |
| Item Name | Bolt,tee Head |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Clampco Products, Inc. |
| Status | ACTIVE |
| Fastener Length | 1.594 INCHES NOMINAL IN |
| Tee Bolt Cylindrical Head Diameter | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Thread Length | 1.190 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A276 TY 431 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | TEE NO. 5 |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.780 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL 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 |
|---|---|
| 31-2-1 PRIMARY | Clampco Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 72-5097 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
| 31-2-1 | 3/9 Design control — primary reference Specialty Products Co Div of Clampco Products Inc |
| 815-0317 | 5/9 Secondary reference Cummins Power Generation Inc. |
NSN 5306-01-049-9128 is a Bolt,tee Head, manufactured by Clampco Products, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-049-9128 has 1 manufacturer part number on file: 31-2-1 (Clampco Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-336-9668. Verify interchangeability with system specifications before substitution.
Key specifications for 31-2-1: Fastener Length: 1.594 INCHES NOMINAL IN; Tee Bolt Cylindrical Head Diameter: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN; Thread Length: 1.190 INCHES NOMINAL IN; Material Document and Classification: ASTM A276 TY 431 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 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.