The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-397-5937, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Unicorp.. Government technical data includes 17 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 | 5340-01-397-5937 |
| Primary Part Number | SS304-4C-12 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Unicorp. |
| Status | ACTIVE |
| Length | 0.2500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF |
| Thread Length | 0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | PROJECTION ONE END LEFT INTERNAL THREAD |
| Material Document and Classification | QQ-A-225A,COMP 2 ,T-3 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF A |
| Diameter | 0.2500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.1120 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | CHROMATE STANDOFF |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | ALUMINUM ALLOY 3003 STANDOFF |
| Right Projection Diameter | 0.1840 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Right Projection Length | 0.0910 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN |
| Hole Diameter | 0.1500 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 |
|---|---|
| SS304-4C-12 PRIMARY | Unicorp. (USA) |
NSN 5340-01-397-5937 is a Standoff,threaded,spacing, manufactured by Unicorp., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-397-5937 has 1 manufacturer part number on file: SS304-4C-12 (Unicorp.).
Key specifications for SS304-4C-12: Length: 0.2500 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541C MIL SPEC SINGLE TREATMENT RESPONSE STANDOFF; Thread Length: 0.2440 INCHES MINIMUM AND 0.2560 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN; Style Designator: PROJECTION ONE END LEFT INTERNAL THREAD. 17 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.