The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-421-4283, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is American Precision Industries, Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-421-4283 |
| Primary Part Number | 129-1002-00 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | American Precision Industries, Inc |
| Status | ACTIVE |
| Width Across Flats | 0.1880 INCHES NOMINAL IN |
| Length | 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN |
| Thread Length | 0.2500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.1120 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | NICKEL STANDOFF |
| Thread Quantity Per Inch | 40 RIGHT INTERNAL |
| Material | COPPER ALLOY 360 STANDOFF |
| Right Projection Diameter | 0.1120 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| Right Projection Length | 0.2000 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 |
|---|---|
| 129-1002-00 PRIMARY | American Precision Industries, Inc (USA) |
| Reference | Meaning |
|---|---|
| 129-1002-00 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-421-4283 is a Standoff,threaded,spacing, manufactured by American Precision Industries, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-421-4283 has 1 manufacturer part number on file: 129-1002-00 (American Precision Industries, Inc).
Key specifications for 129-1002-00: Width Across Flats: 0.1880 INCHES NOMINAL IN; Length: 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN; Thread Length: 0.2500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN; Style Designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD. 14 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.