The Nut,self-Locking,barrel, cataloged under National Stock Number 5310-01-055-7765, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 23 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-055-7765 |
| Primary Part Number | 64445-1018 |
| Item Name | Nut,self-Locking,barrel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Nut Length | 1.150 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE I,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE SHELL |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Diameter | 1.000 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.990 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | CADMIUM SHELL |
| Nut Style | FLOATING SELF-LOCKING BARREL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL SHELL |
| Material | STEEL NUT |
| Barrel Height | 0.593 INCHES MINIMUM AND 0.613 INCHES MAXIMUM 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 |
|---|---|
| 64445-1018 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VN1622CC108 | 5/2 Secondary reference U.S. Government activity |
| SL408-10 | 3/2 Design control — primary reference U.S. Government activity |
| C085-10 | 5/9 Secondary reference U.S. Government activity |
| C085-10 | 7/2 Vendor item drawing reference U.S. Government activity |
| 408-10 | 5/9 Secondary reference U.S. Government activity |
| 5310PL2215135 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| LH7974-10 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-055-7765 is a Nut,self-Locking,barrel, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-055-7765 has 1 manufacturer part number on file: 64445-1018 (Sps Technologies, Llc Dba PB Fasteners).
6 possible matches (shared part number, not a government interchangeability claim): 5998-01-056-1050, 5340-01-080-2412, 4510-01-190-5983. Verify interchangeability with system specifications before substitution.
Key specifications for 64445-1018: Lubrication: DRY FILM LUBRICANT; Nut Length: 1.150 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE I,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT; Surface Treatment Document and Classification: QQ-P-416,TYPE II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHELL. 23 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.