The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-731-2637, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-731-2637 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Width Across Flats | 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Length | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416, TYPE II, CLASS 2 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM RIGHT EXTERNAL IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Material Document and Classification | AMS6346 AEROSPACE MATERIAL SPEC STD 1ST MATERIAL RESPONSE OR MIL-S-6050, CONDITION F MIL SPEC 2ND MATERIAL RESPONSE OR AMS6322, AMS6325 OR AMS6327 AEROSPACE MATERIAL SPEC STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.1900 INCHES RIGHT EXTERNAL IN |
| Nominal Thread Size | 0.1900 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Specification/standard Data | 80205-NAS1829 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| Right Projection Diameter | 0.1900 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| Right Projection Length | 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM 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 |
| Reference | Meaning |
|---|---|
| NAS1829-6J20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-731-2637 is a Standoff,threaded,spacing, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-731-2637: Width Across Flats: 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN; Length: 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-P-416, TYPE II, CLASS 2 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN. 23 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.