The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-338-6836, 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 17 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-338-6836 |
| Primary Part Number | H52879 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.729 INCHES MAXIMUM IN |
| Width Across Flats | 0.631 INCHES MINIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.069 INCHES NOMINAL IN |
| Material Document and Classification | AMS 6304 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6485 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6487 ASSN STD 2ND MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 601 OR STEEL COMP H11 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 |
|---|---|
| H52879 | Howmet Global Fastening Systems Inc (USA) |
| BR120 1-6AF | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| SL7021C | Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA) |
| Reference | Meaning |
|---|---|
| BMN10GW7AF | 5/9 Secondary reference U.S. Government activity |
| 132LH8574 | 5/9 Secondary reference Harvard Industries Inc |
| 66796AF | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VN497DM | 5/9 Secondary reference U.S. Government activity |
| BMN10GW7AF | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BACN10GW7AF | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-338-6836 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-338-6836 has 3 manufacturer part numbers on file: H52879 (Howmet Global Fastening Systems Inc), BR120 1-6AF (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), SL7021C (Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace).
Key specifications for H52879: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.438 INCHES MAXIMUM IN; Washer Outside Diameter: 0.729 INCHES MAXIMUM IN; Width Across Flats: 0.631 INCHES MINIMUM IN. 17 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.