The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-361-5506, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Chief Manufacturing Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-361-5506 |
| Primary Part Number | MS14144L16 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Chief Manufacturing Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 1.500 INCHES MINIMUM IN |
| Width Across Flats | 1.115 INCHES MINIMUM AND 1.132 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.120 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.000 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | SLOTTED HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| MS14144L16 | Chief Manufacturing Inc (USA) |
| MS14144L16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| RME9868-16 | 5/9 Secondary reference Harvard Industries Inc |
| MS14144L16 | 5/9 Secondary reference U.S. Government activity |
| MS14144L16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-361-5506 is a Nut,self-Locking,extended Washer, manufactured by Chief Manufacturing Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-361-5506 has 2 manufacturer part numbers on file: MS14144L16 (Chief Manufacturing Inc), MS14144L16 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for MS14144L16: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN; Washer Outside Diameter: 1.500 INCHES MINIMUM IN; Width Across Flats: 1.115 INCHES MINIMUM AND 1.132 INCHES MAXIMUM IN. 16 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.