The Washer,recessed, cataloged under National Stock Number 5310-00-533-9737, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 5310-00-533-9737 |
| Primary Part Number | 101121-01 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-5626 COND C MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN |
| Material Thickness | 0.064 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Recess Diameter | 0.238 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| 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 |
|---|---|
| 101121-01 PRIMARY | Ge Aviation Systems Llc (USA) |
NSN 5310-00-533-9737 is a Washer,recessed, manufactured by Ge Aviation Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-533-9737 has 1 manufacturer part number on file: 101121-01 (Ge Aviation Systems Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5320-01-185-4706, 6525-01-641-4869. Verify interchangeability with system specifications before substitution.
Key specifications for 101121-01: Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Style Designator: RECESSED; Material Document and Classification: MIL-S-5626 COND C MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN. 9 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.