The Clamp,loop, cataloged under National Stock Number 5340-01-520-9179, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 15 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-520-9179 |
| Primary Part Number | SS7231LWDG7 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE BAND |
| Cushioning Environmental Protection | WEATHER RESISTANT |
| Style Designator | OFFSET MOUNT |
| Material Document and Classification | QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE BAND |
| Material Document and Classification | ASM 3209 ASSN STD SINGLE MATERIAL RESPONSE CUSHION |
| Diameter | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 0.841 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 4 TYPE AND A CLASS |
| Surface Treatment | CHROMATE BAND |
| Tongue Hole Type | ROUND, UNTHREADED |
| Center to Center Distance Between Loop and Mounting Hole | 0.608 INCHES MINIMUM AND 0.638 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 BAND |
| Material | RUBBER CHLOROPRENE CLASS CR CUSHION |
| Loop Inside Diameter | 0.423 INCHES MINIMUM AND 0.453 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 |
|---|---|
| SS7230WDC7 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SS7231LWDG7 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5340-01-520-9179 is a Clamp,loop, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-520-9179 has 2 manufacturer part numbers on file: SS7230WDC7 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SS7231LWDG7 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SS7231LWDG7: Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE BAND; Cushioning Environmental Protection: WEATHER RESISTANT; Style Designator: OFFSET MOUNT; Material Document and Classification: QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE BAND. 15 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.