The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-499-1391, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Accurate Screw Machine Corp Div Accurate Screw Machine Corporation. Government technical data includes 18 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 | 5340-01-499-1391 |
| Primary Part Number | 14030R-SS-.650-SDS-12 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072-C, AMEND NO.1, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.250 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Diameter | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.112 INCHES RIGHT EXTERNAL IN |
| Nominal Thread Size | 0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Cross-Sectional Shape | ROUND |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 40 RIGHT EXTERNAL |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 40 RIGHT EXTERNAL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED 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 |
| Part Number | Manufacturer |
|---|---|
| 14030R-SS-.650-SDS-12 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
NSN 5340-01-499-1391 is a Standoff,threaded,spacing, manufactured by Accurate Screw Machine Corp Div Accurate Screw Machine Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-499-1391 has 1 manufacturer part number on file: 14030R-SS-.650-SDS-12 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 14030R-SS-.650-SDS-12: Surface Treatment Document and Classification: MIL-F-14072-C, AMEND NO.1, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.250 INCHES NOMINAL RIGHT EXTERNAL IN; Thread Length: 0.250 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN; Style Designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD. 18 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.