The Gage,plug,thread, cataloged under National Stock Number 5220-00-566-4041, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. The manufacturer of record is Stanley Engineered Fastening Llc. Government technical data includes 12 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. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5220-00-566-4041 |
| Primary Part Number | 1688-7 |
| Item Name | Gage,plug,thread |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Manufacturer | Stanley Engineered Fastening Llc |
| Status | ACTIVE |
| Screw Thread Quantity Per Inch | 14.0 |
| Thread Design Pitch Diameter | 0.4839 INCHES MINIMUM AND 0.4875 INCHES MAXIMUM IN |
| Design Type | DOUBLE END |
| Thread Type | SINGLE |
| Tapered Threads | NOT INCLUDED |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Features Provided | COMBINATION GO NOT GO GAGE |
| Thread Major Diameter Truncation Feature | NOT INCLUDED |
| Thread Direction | RIGHT-HAND |
| Thread Stamped Pitch Diameter | 0.4839 INCHES MINIMUM AND 0.4875 INCHES MAXIMUM IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Pitch Diameter Tolerance | -0.00030 TO 0.00030 INCHES AND -0.00030 TO 0.00000 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1688-7 PRIMARY | Stanley Engineered Fastening Llc (USA) |
NSN 5220-00-566-4041 is a Gage,plug,thread, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
NSN 5220-00-566-4041 has 1 manufacturer part number on file: 1688-7 (Stanley Engineered Fastening Llc).
4 possible matches (shared part number, not a government interchangeability claim): 6520-01-003-7701, 5810-01-017-2505, 5325-01-089-5848. Verify interchangeability with system specifications before substitution.
Key specifications for 1688-7: Screw Thread Quantity Per Inch: 14.0; Thread Design Pitch Diameter: 0.4839 INCHES MINIMUM AND 0.4875 INCHES MAXIMUM IN; Design Type: DOUBLE END; Thread Type: SINGLE. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.