The Nut,self-Locking,cap, cataloged under National Stock Number 5310-00-052-6741, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-052-6741 |
| Primary Part Number | 79-1660-440 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Width Across Flats | 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | -57.0 CELSIUS MINIMUM AND 121.0 CELSIUS MAXIMUM DEGC |
| Material Document and Classification | MIL-P-17091 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Specification/standard Data | 10001-2558101 MANUFACTURERS SPECIFICATION CONTROL |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.110 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL EXCEPT INSERT |
| Nut Style | CAP |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | STEEL COMP 303 OVERALL EXCEPT INSERT |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 79-1660-440 | Satair A/s (DNK) |
| 318583-1 | Raytheon Company Dba Raytheon Co (USA) |
| 1JA7510H06 | Northrop Grumman Support Services Corp (USA) |
| 79-1660-440 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| L79-1660-440 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 2558101-1 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| D922673-4 | 5/2 Secondary reference U.S. Government activity |
| 79-1660-40 | 5/9 Secondary reference Harvard Industries Inc |
| 1JA7510H06 | 5/9 Secondary reference U.S. Government activity |
| 318583-1 | 5/9 Secondary reference Raytheon Company Div Corp |
| L79-1660-440 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 79-1660-440 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| 16610426-001 | 7/2 Vendor item drawing reference Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services |
NSN 5310-00-052-6741 is a Nut,self-Locking,cap, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-052-6741 has 5 manufacturer part numbers on file: 79-1660-440 (Satair A/s), 318583-1 (Raytheon Company Dba Raytheon Co), 1JA7510H06 (Northrop Grumman Support Services Corp), 79-1660-440 (Howmet Global Fastening Systems Inc), L79-1660-440 (Satair A/s).
3 possible matches (shared part number, not a government interchangeability claim): 5310-00-902-3950, 5310-01-433-6902, 5310-01-450-6280. Verify interchangeability with system specifications before substitution.
Key specifications for 79-1660-440: Width Across Flats: 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: -57.0 CELSIUS MINIMUM AND 121.0 CELSIUS MAXIMUM DEGC. 18 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.