The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-554-3610, 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 22 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.
| Parameter | Value |
|---|---|
| NSN | 5340-01-554-3610 |
| Primary Part Number | 20518HSS1.625-12 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 1.625 INCHES NOMINAL IN |
| Left Projection Diameter | 0.164 INCHES NOMINAL IN |
| Left Projection Length | 0.438 INCHES NOMINAL IN |
| Thread Length | 0.438 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.438 INCHES NOMINAL LEFT EXTERNAL IN |
| Style Designator | PROJECTION BOTH ENDS |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT EXTERNAL |
| Nominal Thread Size | 0.164 INCHES RIGHT EXTERNAL IN |
| Nominal Thread Size | 0.164 INCHES LEFT EXTERNAL IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2A LEFT EXTERNAL A |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Thread Quantity Per Inch | 32 LEFT EXTERNAL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Right Projection Diameter | 0.164 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT EXTERNAL |
| Right Projection Length | 0.438 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 |
| Part Number | Manufacturer |
|---|---|
| 20518HSS1.625-12 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
NSN 5340-01-554-3610 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 5340-01-554-3610 has 1 manufacturer part number on file: 20518HSS1.625-12 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 20518HSS1.625-12: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 1.625 INCHES NOMINAL IN; Left Projection Diameter: 0.164 INCHES NOMINAL IN; Left Projection Length: 0.438 INCHES NOMINAL IN. 22 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.