The Clamp,loop, cataloged under National Stock Number 5340-01-619-0959, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Umpco, Inc. Dba Umpco Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-619-0959 |
| Primary Part Number | NASM21333-51 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY II, CL 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OR ASTM B633, FE/ZN 8, TY II NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SINGLE LOOP |
| Material Document and Classification | ASTM A109 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.344 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.125 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.844 INCHES NOMINAL IN |
| Material | STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Loop Inside Diameter | 0.875 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 |
|---|---|
| NASM21333-51 | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| MS21333-51 | 3/2 Design control — primary reference U.S. Government activity |
| NASM21333 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5340-01-619-0959 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-619-0959 has 1 manufacturer part number on file: NASM21333-51 (Umpco, Inc. Dba Umpco Inc).
Key specifications for NASM21333-51: Surface Treatment Document and Classification: QQ-P-416, TY II, CL 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OR ASTM B633, FE/ZN 8, TY II NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SINGLE LOOP; Material Document and Classification: ASTM A109 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL; Diameter: 0.344 INCHES NOMINAL 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.