bolts › close tolerance bolts
AN175-34
Aeronautical Standard Bolt
Description
Fastener Length: 3-19/32", Thread: 1/4-24, Thread Length: 17/32"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 3.421 inches nominal first hole |
|---|---|
| Fastener Length | 3.594 |
| Grip Diameter | 0.3112 inches minimum and 0.3117 inches maximum |
| Grip Length | 3.062 |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.172 inches minimum and 0.204 inches maximum |
| Head Style | Hexagon Head |
| Length | 3 19/32 |
| Material | Steel |
| Material Specification | Mil-s-6049 mil spec 1st material response or mil-s-6050 mil spec 2nd material response or mil-s-6098 mil spec 3rd material response or ams 6300 assn std 4th material response or mil-s-5626 mil spec 5th material response or mil-s-6758 mil spec 6th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches nominal first hole |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 class 3 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.532 inches minimum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Between Flats | 0.490 inches minimum and 0.502 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN175-34. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error