The Washer,key, cataloged under National Stock Number 5310-01-055-3857, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-055-3857 |
| Primary Part Number | M81935/3-5 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| 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 |
|---|---|
| M81935/3-5 PRIMARY | Sae International Dba Sae International (USA) |
| M81935/3-5 | Embraer S.a. (BRA) |
| Reference | Meaning |
|---|---|
| AS81935/3-5 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS81935/3 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MIL-B-81935/3 | 5/9 Secondary reference U.S. Government activity |
| M81935/3-6 | 5/9 Secondary reference U.S. Government activity |
| AS81935/3-5 | 5/9 Secondary reference Sae International Dba Sae International |
| M81935/3-5 | 5/9 Secondary reference U.S. Government activity |
| AS81935 | 5/9 Secondary reference U.S. Government activity |
| AS81935 | 5/9 Secondary reference Sae International Dba Sae International |
| 5342PL0835585 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-055-3857 is a Washer,key, manufactured by Sae International Dba Sae International, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-055-3857 has 2 manufacturer part numbers on file: M81935/3-5 (Sae International Dba Sae International), M81935/3-5 (Embraer S.a.).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-066-6766, 5310-01-070-2113, 5310-01-070-6460. Verify interchangeability with system specifications before substitution.
Key specifications for M81935/3-5: Special Features: STEEL,MIL-S-18729,COMP 4130; CADMIUM AND CHROMATE,QQ-P-416,TY 2,CL 2; ROCKWELL HARDNESS C SCALE,35.0 MIN TO 39.0 MAX; 0.319 IN. MIN AND 0.329 IN. MAX ID; 0.500 IN. MIN AND 0.520 IN. MAX OD; HAS INTERNAL KEY 0.041 IN. LG AND 0.055 IN. W; 0.110 IN. THK; HAS 0.067 INCHES DIA LOCKING WIRE HOLE. IN. 0 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.