← Washers
AN975-7
AN975 taper pin washer
| Head / form | Taper pin washer |
|---|---|
| Diameter / thread / size | screw size 7/16; A 2?/64" |
| Grip / length / thickness | D 13/64", E 5/64" (see the sheet's figure for A to F) |
| Material / finish | Steel, cadmium plate QQ-P-416 Type II Class 2 |
| Reference confidence | low |
| Source | AN975 Rev 3 sheet 1 ↗ |
Head / form source: AN975 Rev 3 sheet 1
Source notes and limits
- AN975 Rev 3 table: A 2?/64, B 27/32, C 21/32, D 13/64, E 5/64, F min dia 5/8.
- Not legible on the scan: a ("?" marks the unreadable characters).
- "USED WITH TAPER PINS SHOWN ON AN386." (AN975 sheet 1). MATERIAL: STEEL, SPECIFICATION MIL-S-7097, AN-S-11, OR QQ-S-698. DIMENSIONS IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES FRACTIONS ±1/64.
- "AN975 REV 3 is inactive for new design and is no longer used except for replacement purposes." (Notice 1, 16 June 1997).
- FAA AC 43.13-1B para 7-89 (p.7-15): "TAPER PIN WASHERS (AN975). Taper pin washers are used with the threaded taper pin."
- FAA AC 43.13-1B para 7-101 (p.7-17): "The threaded taper pin is used with a taper-pin washer (AN975) and shear nut (safetied with a cotter pin) or self-locking nut (if undrilled)."
Reference only: the controlling drawing, its process spec and the manufacturer's installation instructions govern. How to use these answers