The Clamp,loop, cataloged under National Stock Number 5340-01-554-7977, 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 7 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 | 5340-01-554-7977 |
| Primary Part Number | 310631 NON-ASBESTOS |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Style Designator | SINGLE LOOP |
| Diameter | 0.204 INCHES NOMINAL IN |
| Material Thickness | 0.064 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.443 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 1.250 INCHES NOMINAL IN |
| Loop Inside Diameter | 1.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 310631 NON-ASBESTOS PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5340-01-554-7977 is a Clamp,loop, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-554-7977 has 1 manufacturer part number on file: 310631 NON-ASBESTOS (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 310631 NON-ASBESTOS: Style Designator: SINGLE LOOP; Diameter: 0.204 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN; Material Thickness: 0.064 INCHES NOMINAL IN. 7 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.