The Clamp,block,section, cataloged under National Stock Number 5340-01-644-8637, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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 | 5340-01-644-8637 |
| Primary Part Number | 8603752 |
| Item Name | Clamp,block,section |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Block Height | 10.0 MILLIMETERS MINIMUM MM |
| Style Designator | RECTANGULAR |
| Distance From Center of Mounting Hole to Edge Along the Width | 10.0 MILLIMETERS NOMINAL MM |
| Center to Center Distance Between First and Second Mounting Holes | 73.75 MILLIMETERS MINIMUM MM |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 8603752 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-644-8637 is a Clamp,block,section, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-644-8637 has 1 manufacturer part number on file: 8603752 (Naval Sea Systems Command).
Key specifications for 8603752: Mounting Hole Quantity: 4; Block Height: 10.0 MILLIMETERS MINIMUM MM; Style Designator: RECTANGULAR; Distance From Center of Mounting Hole to Edge Along the Width: 10.0 MILLIMETERS NOMINAL MM. 6 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.