The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-339-3938, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-339-3938 |
| Primary Part Number | S353-5-16 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Fastener Length | 1.451 INCHES MINIMUM AND 1.498 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.467 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| FIT7047-5-16 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC453-5-16 | West Coast Aerospace, Inc. (USA) |
| S353-5-16 PRIMARY | Huck International, Inc (USA) |
| HP5453-5-16 | Heartland Precision Fasteners Inc (USA) |
| 109453-5-16 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11825-5-16 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23029-5-16 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB61-5-16 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M453-5-16 | Houston Precision Fasteners I Lp (USA) |
| GS1016-5-16 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| S11-1060-5-16 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| SLB252-5-16 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| MB61-5-16 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC753-5-16 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VS3204-5-16 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| PBF1253-5-16 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BM17019-5-16 | 5/9 Secondary reference U.S. Government activity |
| ST3M453-5-16 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| ST3M453-5-16 | 5/2 Secondary reference U.S. Government activity |
| ST3M453-5-16 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| MA5453-5-16 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 109453-5-16 | 5/2 Secondary reference U.S. Government activity |
| ST3M453-5-16 | 5/9 Secondary reference M.s. Aerospace Inc. Dba Ms Aerospace Inc |
| S353-5-16 | 5/9 Secondary reference U.S. Government activity |
| BM17019-5-16 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| KS3020-5-16 | 5/9 Secondary reference Kenaloy Products Inc Sub Masco Corp |
| VS3204-5-16 | 5/9 Secondary reference U.S. Government activity |
| 10116240 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M453-5-16 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
NSN 5306-01-339-3938 is a Bolt,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-339-3938 has 16 manufacturer part numbers on file: FIT7047-5-16 (Fastener Innovation Technology, Inc. Dba F I T), WC453-5-16 (West Coast Aerospace, Inc.), S353-5-16 (Huck International, Inc), HP5453-5-16 (Heartland Precision Fasteners Inc), 109453-5-16 (Sps Technologies, Llc Dba PB Fasteners) and 11 more.
Key specifications for S353-5-16: Head Height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN; Fastener Length: 1.451 INCHES MINIMUM AND 1.498 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.467 INCHES NOMINAL IN. 16 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.