The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-277-2155, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 17 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-277-2155 |
| Primary Part Number | 74597-M2015-10 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 12.78 MILLIMETERS MINIMUM AND 13.22 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 4H |
| Fastener Length | 44.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.5 |
| Thread Length | 34.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 20.0 MILLIMETERS MM |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 10.0 MILLIMETERS NOMINAL MM |
| Width Between Flats | 29.67 MILLIMETERS MINIMUM AND 30.00 MILLIMETERS MAXIMUM MM |
| Grip Diameter | 19.98 MILLIMETERS MINIMUM AND 20.00 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PASSIVATE OVERALL |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 74597-M2015-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30SX20-10 | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACB30SX20-10 | 5/9 Secondary reference U.S. Government activity |
| BACB30SX20-10 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| VS3078-12-10 | 5/2 Secondary reference U.S. Government activity |
| BACB30SX20-10 | 7/2 Vendor item drawing reference U.S. Government activity |
| 74597-M2015-10 | 5/2 Secondary reference U.S. Government activity |
| BACB30SX20-10 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-277-2155 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-277-2155 has 2 manufacturer part numbers on file: 74597-M2015-10 (Sps Technologies, Llc Dba PB Fasteners), BACB30SX20-10 (Federal Manufacturing Corp).
Key specifications for 74597-M2015-10: Head Height: 12.78 MILLIMETERS MINIMUM AND 13.22 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 4H; Fastener Length: 44.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.