- Thread Class
- 3A
- Thread Direction
- Right-hand
- Thread Length
- 0.430-0.578 in
- Fastener Length
- 0.704-0.751 in
- Head Style
- Round
- Head Diameter
- 0.464-0.493 in
- Head Height
- 0.133-0.150 in
- Internal Drive Style
- Cross recess type 1 (Phillips)
- Nominal Thread Diameter
- 0.250 in (1/4-28 UNF)
- Thread Quantity per Inch
- 28
- Min Tensile Strength
- 125,000 PSI
- Hardness
- 26.0-32.0 Rockwell C
- Material
- Steel comp 8630 per MIL-S-6050 / AN-S-9
- Surface Treatment
- Cadmium per QQ-P-416, Type 1, Class 3
- Thread Series
- UNF
Catalogue data is compiled from public DLA/FLIS sources and is provided for
identification. Availability, condition and certification are confirmed on
quotation. OmniSynk Distribution Services is a stocking distributor.