The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-617-9254, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Multicomp, Inc Dba Labelonce Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-617-9254 |
| Primary Part Number | SPC21578 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Multicomp, Inc Dba Labelonce Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.138 INCHES RIGHT EXTERNAL IN |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | CHROMATE OVERALL |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | ALUMINUM OVERALL |
| Right Projection Diameter | 0.138 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 | 0.250 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 |
NSN 5340-01-617-9254 is a Standoff,threaded,spacing, manufactured by Multicomp, Inc Dba Labelonce Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-617-9254 has 2 manufacturer part numbers on file: SPC21578 (Multicomp, Inc Dba Labelonce Corporation), 11M2195 (Newark Electronics Inc).
Key specifications for SPC21578: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL RIGHT EXTERNAL IN; Thread Length: 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN. 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.