The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-00-276-5629, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-276-5629 |
| Primary Part Number | TLN1031L4 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Washer Outside Diameter | 0.560 INCHES MAXIMUM IN |
| Width Across Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| Material Document and Classification | QQ-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 3RD MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.072 INCHES MINIMUM AND 0.087 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.342 INCHES MINIMUM AND 0.352 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | FLAT WITH TURNED UP EDGE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1050 WASHER |
| Material | STEEL COMP 8740 OR STEEL COMP E4340 OR STEEL COMP 4340 NUT |
| 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 |
|---|---|
| TLN1031L4 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| TLN1031L4 | 5/9 Secondary reference U.S. Government activity |
| TLN1031L4 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| TLN1031L4 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| TLN1031L4 | 5/9 Secondary reference U.S. Government activity |
| TLN1031L4 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-276-5629 is a Nut,self-Locking,assembled Washe, manufactured by Huck International, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-276-5629 has 1 manufacturer part number on file: TLN1031L4 (Huck International, Inc).
Key specifications for TLN1031L4: Lubrication: SOLUBLE LUBRICANT; Overall Height: 0.316 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN; Washer Outside Diameter: 0.560 INCHES MAXIMUM IN; Width Across Flats: 0.367 INCHES MINIMUM AND 0.376 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.