The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-514-4927, 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 21 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-514-4927 |
| Primary Part Number | C161-4-1A-32-72 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE II, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 82 |
| Nut Counterbore Depth | 0.070 INCHES MINIMUM FIRST END IN |
| Features Provided | FLOATING NUT |
| Channel Height | 0.308 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.254 INCHES MINIMUM FIRST END IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.315 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE CHANNEL |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 NUT |
| Material | ALUMINUM ALLOY 7075 CHANNEL |
| Material | STEEL CORROSION RESISTING CLIP |
| Nut Spacing | 1.000 INCHES NOMINAL IN |
| Channel Style | STRAIGHT TYPE |
| 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 |
|---|---|
| C161-4-1A-32-72 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BGC00647-4-1F32-72 PRIMARY | Bristol Industries, Llc (USA) |
| G49838-4-1F-3272 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| NA2066-1-048R-3272 | 5/9 Secondary reference Nafco Usa Llc |
| LE114-0044B3272 | 7/2 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
NSN 5310-01-514-4927 is a Nut Assembly,self-Locking,gang C, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-514-4927 has 3 manufacturer part numbers on file: C161-4-1A-32-72 (Sps Technologies, Llc Dba PB Fasteners), BGC00647-4-1F32-72 (Bristol Industries, Llc), G49838-4-1F-3272 (Howmet Global Fastening Systems Inc).
Key specifications for C161-4-1A-32-72: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: MIL-A-8625, TYPE II, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 82. 21 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.