The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-088-8979, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-088-8979 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Flange Width Across Flats | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Length | 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFFQQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF |
| Flange Thickness | 0.270 INCHES MINIMUM AND 0.270 INCHES MINIMUM AND 0.275 INCHES MAXIMUM0.275 INCHES MAXIMUM IN |
| Thread Length | 0.180 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD)0.180 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Length | 0.260 INCHES NOMINAL RIGHT EXTERNAL0.260 INCHES NOMINAL RIGHT EXTERNAL IN |
| Style Designator | FLANGED WITH LEFT INTERNAL THREADFLANGED WITH LEFT INTERNAL THREAD |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFFASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STANDOFF |
| Thread Direction | RIGHT-HAND RIGHT EXTERNALRIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD)0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.138 INCHES RIGHT EXTERNAL0.138 INCHES RIGHT EXTERNAL IN |
| Surface Treatment | PASSIVATE STANDOFFPASSIVATE STANDOFF |
| Thread Class | 2A RIGHT EXTERNAL2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD)2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD)32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL32 RIGHT EXTERNAL |
| Material | STEEL COMP 303 STANDOFFSTEEL COMP 303 STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNALUNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| 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 |
| Reference | Meaning |
|---|---|
| 425R148H02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-088-8979 is a Standoff,threaded,spacing, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-088-8979: Flange Width Across Flats: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN; Length: 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFFQQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF; Flange Thickness: 0.270 INCHES MINIMUM AND 0.270 INCHES MINIMUM AND 0.275 INCHES MAXIMUM0.275 INCHES MAXIMUM IN. 20 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.