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Unit of Measure

Specifications

Head Style

N/A 100° Flush Tension

Type

N/A Tension

Material

N/A Nickel base alloy per AMS 5662

Finish and Lubricant

N/A Dry film lube per AS5272, Type 1 (Head & Shank only, overspray permitted) & cetyl alcohol lube per AS87132.

Nominal Diameter

N/A 1/4 in

Thread Size

N/A 0.2500-28 UNJF-3A

External Thread - Major Diameter

N/A 0.2410-0.2440 in

External Thread - Pitch Diameter

N/A 0.223 in

A

N/A 0.507 in

A1

N/A 0.475 in

D - Before Finish - Aluminum Coat MIN

N/A 0.248 in

D - After Finish - All MAX

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 0.108 in

M

N/A 0.0328-0.0349 in

R

N/A 0.020-0.030 in

Chamfer

N/A 1/32" x 45°

V

N/A 0.4241-0.4243 in

Y

N/A 0.160 in

T

N/A 0.080 in

J - MAX

N/A 0.160 in

Z

N/A 0.015 in

Minimum Double Shear, pounds

N/A 12260.000 lb

Tension Pounds Minimum

N/A 7750.000 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 head to be concentric 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 & checked on the shank within on the diameter of the thread runout.
5. Blended radius trensition permits use in interference fit application.
6. Curved or flat edge manufacturer´s option.
7. Flute location ("K" Dimension) & geometry are inspected per HFS specification E106.
8. Threads must accept a AS8879 "GO" ring gage to assure free running nut capability. AS8879 limits do not apply to threads in the fluted portion of the thread, the 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. Identify with brown paint or dye on this surface, overspray permitted. Application of paint/dye shall not effect fit, form or function of the PIN.
11. PINS shall be packaged or repackaged in clear sealed bags. Each bag shall be marked with purchaser´s & manufacturer´s complete part number, manufacturer´s lot number, manufacturer´s or distributor´s name & the pack date.
12. Various nut Materials & Configurations available upon request.
13. Parts (-10 Diameter) manufactured to previous revisions with "T" Minimum Depth of 0.090 are acceptable for use & may be used until depletion of inventories.
14. 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 are depleted.
15. For dimensions not shown, see Sheets 1 and 2.
16. For Material, Finish and Lube information, see Sheets 1 and 2.