The Washer,key, cataloged under National Stock Number 5310-00-138-4541, 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 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-138-4541 |
| Primary Part Number | 9M383-14 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Wire Hole Diameter | 0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.148 INCHES NOMINAL0.148 INCHES NOMINAL IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM39.0 ROCKWELL C MAXIMUM |
| Style Designator | INTERNAL PREBENT KEYINTERNAL PREBENT KEY |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALLMIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.310 INCHES MINIMUM AND 1.310 INCHES MINIMUM AND 1.330 INCHES MAXIMUM1.330 INCHES MAXIMUM IN |
| Material Thickness | 0.060 INCHES NOMINAL0.060 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.881 INCHES MINIMUM AND 0.881 INCHES MINIMUM AND 0.891 INCHES MAXIMUM0.891 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-138-4541 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-138-4541 has 3 manufacturer part numbers on file: 9M383-14 (The Boeing Company Div Defense), 9M383-14 (Cuda II, Inc Div Aerospace Products Company), 9M383-14 (Fabrication Specialty Inc Dba Fabrication Specialty Inc).
Key specifications for 9M383-14: Wire Hole Diameter: 0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.148 INCHES NOMINAL0.148 INCHES NOMINAL IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM39.0 ROCKWELL C MAXIMUM. 11 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.