The Clamp,loop, cataloged under National Stock Number 5340-01-361-8510, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-361-8510 |
| Primary Part Number | S656SS12 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Umpco, Inc. Dba Umpco Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-A-35 FED SPEC SINGLE TREATMENT RESPONSE BAND |
| Style Designator | OFFSET MOUNT |
| Material Document and Classification | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE BAND |
| Surface Treatment | PASSIVATE BAND |
| Material | STEEL COMP 302 OR STEEL COMP 321 BAND |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND GLASS FIBER CUSHION |
| 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 |
|---|---|
| S656SS12 PRIMARY | Umpco, Inc. Dba Umpco Inc (USA) |
| JM44LC90SS12PB | J & M Products, Inc (USA) |
| 9M983C12 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 11437SS12PB | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-361-8510 is a Clamp,loop, manufactured by Umpco, Inc. Dba Umpco Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-361-8510 has 3 manufacturer part numbers on file: S656SS12 (Umpco, Inc. Dba Umpco Inc), JM44LC90SS12PB (J & M Products, Inc), 9M983C12 (The Boeing Company Div Defense).
Key specifications for S656SS12: Surface Treatment Document and Classification: QQ-A-35 FED SPEC SINGLE TREATMENT RESPONSE BAND; Style Designator: OFFSET MOUNT; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE BAND; Surface Treatment: PASSIVATE BAND. 6 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.