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National Stock Number:
5305-01-091-2716
Federal Supply Class:
5305
National Item Identification Number:
010912716
Description:
THUMBSCREW
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).
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Manufacturer Information:
| 810AS873 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.410 INCHES NOMINAL | | FASTENER LENGTH | 1.380 INCHES NOMINAL | | MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.750 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | POINT STYLE | BALL | | POINT LENGTH | 0.190 INCHES NOMINAL | | POINT DIAMETER | 0.250 INCHES MINIMUM AND | | 0.255 INCHES MAXIMUM | | SHOULDER SHAPE | ROUND ALL SHOULDERS | | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER | | 0.338 INCHES MINIMUM AND | | 0.348 INCHES MAXIMUM SECOND SHOULDER | | SHOULDER LENGTH | 0.300 INCHES NOMINAL FIRST SHOULDER | | 0.080 INCHES NOMINAL SECOND SHOULDER | | SPECIAL FEATURES | THIRD SHOULDER 0.500 IN. NOM DIA,0.060 IN. NOM LENGTH |
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