The Washer,recessed, cataloged under National Stock Number 5310-00-673-8803, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-673-8803 |
| Primary Part Number | 349109 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.380 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN |
| Recess Depth | 0.206 INCHES MINIMUM AND 0.232 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OVERALL |
| Hole Diameter | 1.010 INCHES MINIMUM AND 1.035 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 |
| Part Number | Manufacturer |
|---|---|
| 349109 | Tokyo Judoi Kogyo K.k. (JPN) |
| 349109 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 349109 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 349109 | 5/9 Secondary reference Tokyo Judogi Kogyo Co. |
NSN 5310-00-673-8803 is a Washer,recessed, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-673-8803 has 2 manufacturer part numbers on file: 349109 (Tokyo Judoi Kogyo K.k.), 349109 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-424-2964. Verify interchangeability with system specifications before substitution.
Key specifications for 349109: Overall Height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.380 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN. 7 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.