Aeronautical Standards Group - Machine Screw - AN525-832R11
Standard Part
Description: Machine Screw
Part Number: AN525-832R11
Alternate Part Numbers: AN525832R11
Product Overview
An externally threaded fastener whose threaded portion is of one 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 of 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.
Item Specification
| Thread Class | 3A | |
| Thread Direction | Right-hand | |
| Thread Length | 0.406 inches minimum | |
| Fastener Length | 0.406 inches nominal | |
| Head Style | Fillister extended washer | |
| Head Diameter | 0.312 inches nominal | |
| Head Height | 0.082 inches minimum and 0.092 inches maximum | |
| Extended Washer Diameter | 0.375 inches nominal | |
| Extended Washer Thickness | 0.023 inches minimum and 0.028 inches maximum | |
| Internal Drive Style | Cross recess type 1 | |
| Nominal Thread Diameter | 0.164 inches | |
| Thread Quantity per Inch | 32 | |
| Minimum Tensile Strength | 125000 pounds per square inch | |
| Hardness Rating | 26.0 rockwell C minimum and 32.0 rockwell C maximum | |
| Screw Material | Steel | |
| Screw Material Document and Classification | QQ-S-689, cond C4 /canceled/ fed spec single material response | |
| Screw Surface Treatment | Cadmium and zinc and chromate | |
| Screw Surface Treatment Document and Classification | AN-P-61 /canceled/ assn std 1ST treatment response and TT-P-1757, ty 1 fed spec 2ND treatment response | |
| Thread Series Designator | UNC |
Fits in
- Bombardier Learjet 40
- Bombardier Learjet 45
- Gulfstream G-IV/GIV-SP/G-400/G-450/G-300
- Gulfstream G-V/G-V-SP/G-550/G-500
- Piaggio Avanti II
- Piaggio Avanti P180
- Textron Aviation Cessna 510 Citation Mustang
- Textron Aviation Cessna 680 Citation Sovereign
- Textron Aviation Cessna 750 Citation X