The Clamp,loop, cataloged under National Stock Number 5340-01-122-0557, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-122-0557 |
| Primary Part Number | 255454 TY4 ASSYJA 1/4 IN |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Temp Rating | 180.0 FAHRENHEIT DEGF |
| Fastening Device Type | SELF-LOCKING HEXAGON NUT |
| Style Designator | SADDLE MOUNT |
| Material Document and Classification | MIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.312 INCHES IN |
| Tongue Hole Type | ROUND, THREADED |
| Material | RUBBER SYNTHETIC OVERALL |
| Length Between Fasteners | 1.750 INCHES NOMINAL IN |
| Loop Inside Diameter | 0.250 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 |
|---|---|
| 255454 TY4 ASSYJA 1/4 IN PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 5340-01-122-0557 is a Clamp,loop, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-122-0557 has 1 manufacturer part number on file: 255454 TY4 ASSYJA 1/4 IN (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 255454 TY4 ASSYJA 1/4 IN: Temp Rating: 180.0 FAHRENHEIT DEGF; Fastening Device Type: SELF-LOCKING HEXAGON NUT; Style Designator: SADDLE MOUNT; Material Document and Classification: MIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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.