The Clamp,beam,rigger's, cataloged under National Stock Number 3940-01-585-8645, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is General Clamp Industries, Inc. Dba General Clamp Industries Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3940-01-585-8645 |
| Primary Part Number | S4S |
| Item Name | Clamp,beam,rigger's |
| FSC / FSG | 3940 / 39 — Blocks, Tackle, Rigging, and Slings |
| Manufacturer | General Clamp Industries, Inc. Dba General Clamp Industries Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S4S PRIMARY | General Clamp Industries, Inc. Dba General Clamp Industries Inc (USA) |
NSN 3940-01-585-8645 is a Clamp,beam,rigger's, manufactured by General Clamp Industries, Inc. Dba General Clamp Industries Inc, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
NSN 3940-01-585-8645 has 1 manufacturer part number on file: S4S (General Clamp Industries, Inc. Dba General Clamp Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-654-0257. Verify interchangeability with system specifications before substitution.
Key specifications for S4S: Special Features: INTERGRATED LIFTING SHACKLE, POSITIVE GRIP LEFT/RIGHT THREADED ADJUSTING BAR; Part Name Assigned by Controlling Agency: FIXED JAW ADJUSTABLE GIRDER CLAMP. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.