The Clamp,loop, cataloged under National Stock Number 5340-00-523-2256, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Arco Industries Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-523-2256 |
| Primary Part Number | 1021RC |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Arco Industries Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE BAND |
| Cushioning Environmental Protection | OIL RESISTANT |
| Style Designator | SINGLE LOOP |
| Material Document and Classification | 417GRADESB515K1 MIL STD SINGLE MATERIAL RESPONSE CUSHION |
| Diameter | 0.406 INCHES NOMINAL IN |
| Material Thickness | 0.027 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.062 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC BAND |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.703 INCHES NOMINAL IN |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 BAND |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR CUSHION |
| Loop Inside Diameter | 0.500 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 |
|---|---|
| 1021RC PRIMARY | Arco Industries Corp (USA) |
| Reference | Meaning |
|---|---|
| 615B1 | 5/9 Secondary reference Diamond Reo Truck Co |
NSN 5340-00-523-2256 is a Clamp,loop, manufactured by Arco Industries Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-523-2256 has 1 manufacturer part number on file: 1021RC (Arco Industries Corp).
Key specifications for 1021RC: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE BAND; Cushioning Environmental Protection: OIL RESISTANT; Style Designator: SINGLE LOOP; Material Document and Classification: 417GRADESB515K1 MIL STD SINGLE MATERIAL RESPONSE CUSHION. 13 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.