The Clamp,loop, cataloged under National Stock Number 5340-00-059-3813, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-059-3813 |
| Primary Part Number | GC12H20 |
| Item Name | Clamp,loop |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Style Designator | SINGLE LOOP |
| Material Document and Classification | AMS 5517 ASSN STD SINGLE MATERIAL RESPONSE BAND |
| Diameter | 0.204 INCHES NOMINAL IN |
| Material Thickness | 0.063 INCHES NOMINAL IN |
| Distance From Loop Center to Tongue End | 1.468 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE BAND |
| Center to Center Distance Between Loop and Mounting Hole | 1.062 INCHES NOMINAL IN |
| Material | PLASTIC CUSHION |
| Material | STEEL CORROSION RESISTING BAND |
| Loop Inside Diameter | 1.250 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 |
NSN 5340-00-059-3813 is a Clamp,loop, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-059-3813 has 2 manufacturer part numbers on file: GC12H20 (Northrop Grumman Systems Corporation), S565SST20 (Umpco, Inc. Dba Umpco Inc).
Key specifications for GC12H20: Style Designator: SINGLE LOOP; Material Document and Classification: AMS 5517 ASSN STD SINGLE MATERIAL RESPONSE BAND; Diameter: 0.204 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN. 10 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.