The Coupling,clamp,grooved, cataloged under National Stock Number 5342-00-579-1940, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Voss Industries, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5342-00-579-1940 |
| Primary Part Number | 5321C397S |
| Item Name | Coupling,clamp,grooved |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Voss Industries, Llc |
| Status | ACTIVE |
| Included Angle in Deg | 40.0 |
| Band Width | 0.750 INCHES NOMINAL IN |
| Root Width | 0.262 INCHES NOMINAL IN |
| Retainer Width | 0.625 INCHES NOMINAL IN |
| Drilled Lockwire Hole | NOT INCLUDED |
| Shape | ROUND |
| Cross-Sectional Shape Style | GROOVED RETAINER |
| Band Thickness | 0.032 INCHES NOMINAL IN |
| Sealing Inner Liner | NOT INCLUDED |
| Retainer Thickness | 0.050 INCHES NOMINAL IN |
| Inside Diameter | 3.970 INCHES NOMINAL IN |
| Height | 0.141 INCHES NOMINAL IN |
| Nut Type | SELF-LOCKING HEXAGON |
| Segment Quantity | 2 |
| Material | STEEL NUT |
| Material | STEEL CORROSION RESISTING SEGMENT |
| Material | STEEL BOLT |
| Material | STEEL CORROSION RESISTING BAND |
| Latch Style | SINGLE |
| 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 |
|---|---|
| 5321C397S PRIMARY | Voss Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 320-117 | 5/2 Secondary reference U.S. Government activity |
NSN 5342-00-579-1940 is a Coupling,clamp,grooved, manufactured by Voss Industries, Llc, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-00-579-1940 has 1 manufacturer part number on file: 5321C397S (Voss Industries, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 2915-00-628-0895, 5930-01-665-4161. Verify interchangeability with system specifications before substitution.
Key specifications for 5321C397S: Included Angle in Deg: 40.0; Band Width: 0.750 INCHES NOMINAL IN; Root Width: 0.262 INCHES NOMINAL IN; Retainer Width: 0.625 INCHES NOMINAL IN. 19 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.