The Protector,flange, cataloged under National Stock Number 5340-01-121-6957, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 3 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-121-6957 |
| Primary Part Number | PWA50311-3 |
| Item Name | Protector,flange |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Overall Diameter | 4.000 INCHES NOMINAL IN |
| Inside Diameter | 3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| PWA50311-3 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5340-01-121-6957 is a Protector,flange, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-121-6957 has 1 manufacturer part number on file: PWA50311-3 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA50311-3: Overall Diameter: 4.000 INCHES NOMINAL IN; Inside Diameter: 3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN; Special Features: ITEM IS ANODIZED PER AMS 2470 AND IS 1.000 IN. HIGH; 3.500-16 UN THD IN; Material: ALUMINUM ALLOY 6061. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.