5305-99-923-0427
Machine Screw
5305999230427 999230427 BS1981-TABLE 4 1/2 UNC X 2-1/4 BS1981 0257-923-0427
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. View more Machine Screw
January 2023
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Restrictions 5305-99-923-0427
Approved Sources 5305-99-923-0427
- Part Number
- Manufacturer
- Status
- BS1981-TABLE 4 1/2 UNC X 2-1/4
- Manufacturer
- K7766 - Bsi Standards Limited (Active)
- Incomplete Standard
- Incomplete Standard
- BS1981
- K7766 - Bsi Standards Limited (Active)
- NATO Reference
- NATO Reference
- 0257-923-0427
- U1278 - Ministry Of Defence (Navy) (Obsolete)
- NATO Reference
- NATO Reference