The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-435-8754, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 22 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-435-8754 |
| Primary Part Number | ST3M774A08 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.345 INCHES MAXIMUM IN |
| Width Across Flats | 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| Nut Counterbore Depth | 0.065 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Counterbore Diameter | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.062 INCHES MINIMUM IN |
| Surface Treatment | PASSIVATE WASHER |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | FLAT |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 NUT |
| Material | IRON ALLOY 660 WASHER |
| 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 |
|---|---|
| BH01622A08 | Bristol Industries, Llc (USA) |
| ST3M774A08 PRIMARY | The Boeing Company Div Defense (USA) |
| H51120A08 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| H51120A08 | 5/9 Secondary reference U.S. Government activity |
| VN376D08W | 5/2 Secondary reference U.S. Government activity |
| H51120A08 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Microdot Products |
NSN 5310-01-435-8754 is a Nut,self-Locking,assembled Washe, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-435-8754 has 3 manufacturer part numbers on file: BH01622A08 (Bristol Industries, Llc), ST3M774A08 (The Boeing Company Div Defense), H51120A08 (Howmet Global Fastening Systems Inc).
Key specifications for ST3M774A08: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.227 INCHES MAXIMUM IN; Washer Outside Diameter: 0.345 INCHES MAXIMUM IN; Width Across Flats: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN. 22 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.