The Washer,flat, cataloged under National Stock Number 5310-00-950-2717, 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 8 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-950-2717 |
| Primary Part Number | 557133 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Overall Diameter | 0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4544 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | NICKEL ALLOY 400 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.4430 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Thickness | 0.048 INCHES MINIMUM AND 0.054 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 |
|---|---|
| 557133 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 557133 | Satellite Aerospace, Incorporated Dba Satellite Aerospace Inc (USA) |
| 557133 | Tokyo Judoi Kogyo K.k. (JPN) |
| 557133 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 557133 | Trego Inc (USA) |
| Reference | Meaning |
|---|---|
| 557133 | 5/2 Secondary reference U.S. Government activity |
| 557133 | 5/9 Secondary reference Te Connectivity Corporation Dba Raychem Product Division |
| 557133 | 5/2 Secondary reference U.S. Government activity |
| 557133 | 5/9 Secondary reference Tokyo Judogi Kogyo Co. |
NSN 5310-00-950-2717 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-950-2717 has 5 manufacturer part numbers on file: 557133 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 557133 (Satellite Aerospace, Incorporated Dba Satellite Aerospace Inc), 557133 (Tokyo Judoi Kogyo K.k.), 557133 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 557133 (Trego Inc).
Key specifications for 557133: Overall Diameter: 0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN; Material Document and Classification: AMS 4544 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.