The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-190-2178, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-190-2178 |
| Primary Part Number | SUM3016-3 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Head Height | 0.063 INCHES NOMINAL IN |
| Fastener Length | 0.400 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 0731-511,FSCM K5294 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.120 INCHES NOMINAL IN |
| Material Document and Classification | BS.5147 MFR REF SINGLE MATERIAL RESPONSE OR BS.5154 MFR REF SINGLE MATERIAL RESPONSE OR S.1.SPEC 1200-002,FSCM K5294 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.072 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.280 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM 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 |
|---|---|
| SUM3016-3 | Ge Aviation Systems Ltd (GBR) |
| SUM3016-3 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| SUM3016-3 | 5/9 Secondary reference Ge Aviation Systems Llc |
| 10113388 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| SUM3016-3 | 5/9 Secondary reference Ge Aviation Systems Llc Dba Ge Aviation |
NSN 5305-01-190-2178 is a Screw,externally Relieved Body, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-190-2178 has 2 manufacturer part numbers on file: SUM3016-3 (Ge Aviation Systems Ltd), SUM3016-3 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for SUM3016-3: Head Height: 0.063 INCHES NOMINAL IN; Fastener Length: 0.400 INCHES NOMINAL IN; Surface Treatment Document and Classification: 0731-511,FSCM K5294 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.120 INCHES NOMINAL IN. 18 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.