The Clamp,loop, cataloged under National Stock Number 5340-01-499-9931, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Crane Carrier Company, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-499-9931 |
| Primary Part Number | 56-125 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Crane Carrier Company, Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM-A653/A653M ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Diameter | 0.281 INCHES NOMINAL IN |
| Style Designator | SINGLE LOOP |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 0.843 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Center to Center Distance Between Loop and Mounting Hole | 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OVERALL |
| Slot Width | 0.031 INCHES NOMINAL IN |
| Slot Length | 0.355 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Loop Inside Diameter | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM 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 |
NSN 5340-01-499-9931 is a Clamp,loop, manufactured by Crane Carrier Company, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-499-9931 has 3 manufacturer part numbers on file: 56-125 (Crane Carrier Company, Llc), B56-125 (Crane Carrier Company, Llc), A56-125 (Crane Carrier Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 7930-01-617-8010. Verify interchangeability with system specifications before substitution.
Key specifications for 56-125: Surface Treatment Document and Classification: ASTM-A653/A653M ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Material Diameter: 0.281 INCHES NOMINAL IN; Style Designator: SINGLE LOOP; Overall Width: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN. 11 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.