Part Details | MACHINE SCREW
5305-01-239-5054 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
Alternate Parts: T320018905, 55513395, 5551339-5, 5305-01-239-5054, 01-239-5054, 5305012395054, 012395054
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | AUG 30, 1986 | 01-239-5054 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-01-239-5054
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| T320018905 | 36090 | LOCKHEED MARTIN LIBRASCOPECORP |
| 5551339-5 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5305-01-239-5054
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.728 INCHES NOMINAL |
| FASTENER LENGTH | 11.288 INCHES NOMINAL |
| SCREW MATERIAL | STEEL COMP 303 |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE |
| SCREW SURFACE TREATMENT | PASSIVATE |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | UNDERCUT BETWEEN THE THD AND GRIP 0.111 IN. LG AND 0.252 IN. MIN DIA AND 0.262 IN. MAX DIA |