NAS387-1032-8P - Textron Aviation OEM Machine Screw
National Aerospace Standard
Description: Machine Screw
Part Number: NAS387-1032-8P
Product Overview
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.
Specifications
| Thread Class: | | 2A |
| Thread Direction: | Right-hand | |
| Thread Length: | 0.500 Inches Maximum | |
| Fastener Length: | 0.500 Inches Nominal | |
| Head Style: | Oval Countersunk | |
| Head Diameter: | 0.372 Inches Nominal | |
| Internal Drive Style: | Cross Recess Type 1 | |
| Nominal Thread Diameter: | 0.190 Inches | |
| Thread Quantity per Inch: | 32 | |
| Countersink Angle: | 99.0° Minimum and 101.0° Maximum | |
| Screw Material: | Steel | |
| Screw Surface Treatment: | Cadmium and chromate | |
| Screw Surface Treatment Document and Classification: | QQ-P-416, ty 2, cl 3 fed spec all treatment responses | |
| Thread Series Designator: | UNF |
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