The Clamp,loop, cataloged under National Stock Number 5340-01-187-9600, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-187-9600 |
| Primary Part Number | 3929AS1421-WDG12 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Cushioning Environmental Protection | HEAT AND OIL RESISTANT AND WEATHER RESISTANT |
| Fastening Device Type | LOCK TAB |
| Style Designator | SINGLE LOOP |
| Material Document and Classification | AMS 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHION |
| Material Document and Classification | QQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND |
| Diameter | 0.204 INCHES NOMINAL IN |
| Material Thickness | 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN |
| Distance From Loop Center to Tongue End | 1.141 INCHES NOMINAL IN |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.831 INCHES MINIMUM AND 0.861 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 BAND |
| Material | RUBBER CHLOROPRENE CLASS CR CUSHION |
| Loop Inside Diameter | 0.735 INCHES MINIMUM AND 0.765 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 |
|---|---|
| 3929AS1421-WDG12 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 3929AS1421-WDG12 PRIMARY | J & M Products, Inc (USA) |
| JM44LC28WD12 PRIMARY | J & M Products, Inc (USA) |
| S663WDG12 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| Reference | Meaning |
|---|---|
| 642AS1641-12 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 815WD12 | 5/9 Secondary reference U.S. Government activity |
| ST9M588WDG12 | 5/9 Secondary reference The Boeing Company Div Defense |
| 10112934 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5340-01-187-9600 is a Clamp,loop, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-187-9600 has 4 manufacturer part numbers on file: 3929AS1421-WDG12 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 3929AS1421-WDG12 (J & M Products, Inc), JM44LC28WD12 (J & M Products, Inc), S663WDG12 (Umpco, Inc. Dba Umpco Inc).
Key specifications for 3929AS1421-WDG12: Cushioning Environmental Protection: HEAT AND OIL RESISTANT AND WEATHER RESISTANT; Fastening Device Type: LOCK TAB; Style Designator: SINGLE LOOP; Material Document and Classification: AMS 3209 ASSN 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.