The Clamp,loop, cataloged under National Stock Number 5340-01-312-3441, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is J & M Products, Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-312-3441 |
| Primary Part Number | JM44LC28WD34 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | J & M Products, Inc |
| Status | ACTIVE |
| Style Designator | OFFSET MOUNT |
| Material Document and Classification | AMS 3209 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-A-250 T4 FED SPEC SINGLE MATERIAL RESPONSE BAND |
| Diameter | 0.204 INCHES NOMINAL IN |
| Material Thickness | 0.064 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.834 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 1.524 INCHES MINIMUM AND 1.554 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY BAND |
| Material | RUBBER CHLOROPRENE CLASS CR NUT |
| Loop Inside Diameter | 2.125 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 |
|---|---|
| JM44LC28WD34 PRIMARY | J & M Products, Inc (USA) |
| ST9M588WDG34 | The Boeing Company Div Defense (USA) |
| S663WDG34 | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| ST9M630H34 | 5/1 Secondary reference The Boeing Company Div Defense |
| 10448892 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 815WD34 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-312-3441 is a Clamp,loop, manufactured by J & M Products, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-312-3441 has 3 manufacturer part numbers on file: JM44LC28WD34 (J & M Products, Inc), ST9M588WDG34 (The Boeing Company Div Defense), S663WDG34 (Umpco, Inc. Dba Umpco Inc).
Key specifications for JM44LC28WD34: Style Designator: OFFSET MOUNT; Material Document and Classification: AMS 3209 ASSN STD SINGLE MATERIAL RESPONSE NUT; Material Document and Classification: QQ-A-250 T4 FED SPEC SINGLE MATERIAL RESPONSE BAND; Diameter: 0.204 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.