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- FSC 5305 | Screws
- B831-9521-25
Model: B831-9521-25
Machine ScrewProperties:
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.
Part B831-9521-25 NSN 5305-01-503-0328
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 7508900000
- SITC: 69975
- End Use: Finished metal shapes
- NAICS: 332999
- USDA: 1
Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
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