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Unit of Measure

Specifications

Head Style

N/A 100° Reduced Flush Shear

Type

N/A Shear

Material

N/A 6AI-4V Titanium alloy per AMS 4928 or AMS 4967

Finish and Lubricant

N/A No Finish & cetyl alcohol per lube AS87132.

Nominal Diameter

N/A 1/4 in

Thread Size

N/A 0.2500-28 UNJF-3A

External Thread - Major Diameter

N/A 0.1810-0.1840 in

External Thread - Pitch Diameter

N/A 0.223 in

A

N/A 0.395 in

A1

N/A 0.359 in

D - Before Finish - Aluminum Coat MIN

N/A 0.248 in

D - After Finish - All MAY

N/A 0.250 in

D - After Finish - Aluminum Coat MIN

N/A 0.249 in

D - After Finish - None MIN

N/A 0.249 in

F

N/A 0.006 in

G

N/A 0.005 in

H

N/A 0.060 in

M

N/A 0.0248-0.0269 in

R

N/A 0.020-0.030 in

Chamfer

N/A 1/32" x 45°

V

N/A 0.3312-0.3314 in

Y

N/A 0.160 in

J - MAX

N/A 0.160 in

T

N/A 0.090 in

Z

N/A 0.015 in

Minimum Double Shear, pounds

N/A 9300.000 lb

Tension Pounds Minimum

N/A 3700.000 lb

Notes

Notes

N/A 1. Dimensions are in inches and to be met after finish.
2. Surface texture per ANSI B46.1.
3. Conical surface of the head runout to "D" within 0.004 FIM.
4. "A1" is concentric to "D" within "F" FIM. Runout of "D" to "Pitch" within "G" FIM when held on the "Pitch" of the complete threads nearest the shank and checked on the shank within one diameter of the thread runout.
5. Blended radius transition permits use in interference fit application.
6. Curved or flat edge manufacturer´s option.
7. Flute loation ("K" Dimension) and geometry are inspected per HFS specification E106.
8. Threads must be accept an AS8879 "GO" ring gage to assure free running nut capability. AS8879 limits do not apply to threads in the fluted portion of the thread, tha minor and pitch diameters may be up to 0.004 below AS8879 minimum values and major diameter may be up to 0.002 below sheet 1 values for a distance equal to the flute length plus 1.5P Max.
9. See table III.
10. Pins shall be packaged or repackaged in clear sealed bags. Each bag shall contein a maximum of 100 pins for 5 and 6 diameters, 50 pins per bag for 8 and 10 diameters, 25 pins per bag for 12 diameter. Each bag shall be marked with purchaser´s and manufacturer´s complete part number, manufacturer´s lot number, manufacturer´s or distributor´s name and the pack date.
11. Various nut materials & configurations available upon request.
12. Parts with a manufacture date on or after April 7, 2011; Shall have the SPLINE-LOK™ recess petals removed in accordance with E121. The requirements of E121 are not applicable to parts with a manufacture date prior to April 7, 2011; These parts are acceptable for use until inventories depleted.
13. For dimensions not shown, see sheets 1 and 2.
14. For material, Finish & lube information, see sheets 1 and 2.