The Clamp,loop, cataloged under National Stock Number 5340-01-644-2351, 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 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-644-2351 |
| Primary Part Number | 30-302-3D20G12 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Smallest Loop Width | 1.615 INCHES MINIMUM AND 1.645 INCHES MAXIMUM IN |
| Style Designator | RECTANGULAR |
| Material Document and Classification | AMS-QQ-A-250/5 ASSN STD SINGLE MATERIAL RESPONSE BAND |
| Material Document and Classification | MIL-C-8603 ASSN STD SINGLE MATERIAL RESPONSE CUSHION |
| Diameter | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.125 INCHES MINIMUM AND 1.133 INCHES MAXIMUM IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.782 INCHES MINIMUM AND 0.788 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 BAND |
| Material | RUBBER CHLOROPRENE CLASS CR CUSHION |
| Loop Length | 1.115 INCHES MINIMUM AND 1.145 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 |
| Part Number | Manufacturer |
|---|---|
| 30-302-3D20G12 | Umpco, Inc. Dba Umpco Inc (USA) |
| 30-302-3D20G12 | Ho-Ho-Kus, Inc (USA) |
| Reference | Meaning |
|---|---|
| 30-302-3D20G12 | 5/2 Secondary reference U.S. Government activity |
| 30-302 | D/9 Drawing number reference only U.S. Government activity |
| 30-302-3D20G12 | 5/2 Secondary reference U.S. Government activity |
| 30-302-3D20G12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-644-2351 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-644-2351 has 2 manufacturer part numbers on file: 30-302-3D20G12 (Umpco, Inc. Dba Umpco Inc), 30-302-3D20G12 (Ho-Ho-Kus, Inc).
Key specifications for 30-302-3D20G12: Smallest Loop Width: 1.615 INCHES MINIMUM AND 1.645 INCHES MAXIMUM IN; Style Designator: RECTANGULAR; Material Document and Classification: AMS-QQ-A-250/5 ASSN STD SINGLE MATERIAL RESPONSE BAND; Material Document and Classification: MIL-C-8603 ASSN STD SINGLE MATERIAL RESPONSE CUSHION. 12 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.