The Clamp,block, cataloged under National Stock Number 5340-01-338-2898, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 15 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-338-2898 |
| Primary Part Number | 1344M31P12 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 1 |
| Distance From End to First Clamping Hole Center | 0.880 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541,CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A |
| Block Height | 0.517 INCHES NOMINAL0.517 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Material Document and Classification | AMS4218 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.229 INCHES MINIMUM AND 0.229 INCHES MINIMUM AND 0.241 INCHES MAXIMUM0.241 INCHES MAXIMUM IN |
| Clamping Hole Diameter | 0.794 INCHES NOMINAL SINGLE HOLE IN |
| Cable Diameter for Which Designed | 0.750 INCHES NOMINAL SINGLE HOLE IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM IN |
| Distance From End to First Mounting Hole Center | 0.255 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 356.0 |
| 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 |
|---|---|
| 1344M31P12 PRIMARY | General Electric Company (USA) |
NSN 5340-01-338-2898 is a Clamp,block, manufactured by General Electric Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-338-2898 has 1 manufacturer part number on file: 1344M31P12 (General Electric Company).
Key specifications for 1344M31P12: Mounting Hole Quantity: 22; Overall Height: 1.034 INCHES NOMINAL1.034 INCHES NOMINAL IN; Clamping Hole Quantity: 1; Distance From End to First Clamping Hole Center: 0.880 INCHES NOMINAL IN. 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.