The Clamp,block, cataloged under National Stock Number 5340-01-540-0189, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-540-0189 |
| Primary Part Number | 12326435-3 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Clamping Hole Quantity | 55 |
| Surface Treatment Document and Classification | FED-STD-595 FED STD SINGLE TREATMENT RESPONSE |
| Supplementary Features | PAINT HUE IS SEAFORM GREEN COLOR NO 24533 |
| Style Designator | RECTANGULAR |
| Clamping Hole Diameter | 1.060 INCHES NOMINAL ALL HOLES IN |
| Distance From End to First Mounting Hole Center | 2.000 INCHES NOMINAL IN |
| Surface Treatment | PAINT |
| Material | STEEL |
| Center to Center Distance Between First and Second Clamping Holes | 3.000 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 |
| Part Number | Manufacturer |
|---|---|
| 12326435-3 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| HC-32-5-6 | 5/9 Secondary reference Hydro-Craft, Inc. |
NSN 5340-01-540-0189 is a Clamp,block, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-540-0189 has 1 manufacturer part number on file: 12326435-3 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12326435-3: Overall Height: 3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN; Clamping Hole Quantity: 55; Surface Treatment Document and Classification: FED-STD-595 FED STD SINGLE TREATMENT RESPONSE; Supplementary Features: PAINT HUE IS SEAFORM GREEN COLOR NO 24533. 9 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.