The Clamp,block, cataloged under National Stock Number 5340-01-253-0127, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-253-0127 |
| Primary Part Number | 7681-45910-009 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 11 |
| Distance From End to First Clamping Hole Center | 1.344 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 1303,SYSTEM 22 MIL STD SINGLE TREATMENT RESPONSE |
| Block Height | 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.438 INCHES NOMINAL0.438 INCHES NOMINAL IN |
| Clamping Hole Diameter | 1.188 INCHES NOMINAL ALL HOLES IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Surface Treatment | PAINT |
| Material | STEEL |
| 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 |
|---|---|
| 7681-45910-009 | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| JCM-10993-021 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 7681-45910-009 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| C-PH-16-1-2 | 3/2 Design control — primary reference U.S. Government activity |
| C-PH-16-1-2 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 7681-45910-009 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5340-01-253-0127 is a Clamp,block, manufactured by Raytheon Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-253-0127 has 1 manufacturer part number on file: 7681-45910-009 (Raytheon Company).
Key specifications for 7681-45910-009: Mounting Hole Quantity: 22; Overall Height: 0.876 INCHES NOMINAL0.876 INCHES NOMINAL IN; Clamping Hole Quantity: 11; Distance From End to First Clamping Hole Center: 1.344 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.