The Clamp,block, cataloged under National Stock Number 5340-01-668-7631, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 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 | 5340-01-668-7631 |
| Primary Part Number | 12624398 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Color Chip Number | 11120 |
| Surface Treatment Document and Classification | MIL PRF 32348,TYPE III,CLASS I MIL STD SINGLE TREATMENT RESPONSE AND SAE AMS 595 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | ASTM A36 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.350 INCHES NOMINAL IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.750 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.250 INCHES NOMINAL IN |
| Center to Center Distance Between First and Second Mounting Holes | 3.780 INCHES NOMINAL IN |
| Color | RED |
| Surface Treatment | PAINT AND CARC (CHEMICAL AGENT RESISTANT COATING) AND POWDER COATED |
| 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 |
|---|---|
| 12624398 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5340-01-668-7631 is a Clamp,block, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-668-7631 has 1 manufacturer part number on file: 12624398 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12624398: Mounting Hole Quantity: 3; Overall Height: 2.110 INCHES NOMINAL IN; Color Chip Number: 11120; Surface Treatment Document and Classification: MIL PRF 32348,TYPE III,CLASS I MIL STD SINGLE TREATMENT RESPONSE AND SAE AMS 595 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE. 11 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.