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ACCU-LOK® IIA blind fastener for composite application reduced protruding head titanium, metric.
Unit of Measure

Dash Number (Grip)

-310

Grip Range - Min. Grip

1.142 in

Grip Range - Max. Grip

1.220 in

Grip Range

1.142-1.220 in

Nominal Dia

0.315 in

A Dia

0.526 in

D Dia

0.314 in

E Dia Max

0.314 in

F Wrench Flats

0.152 in

G

0.070 in

H

0.148 in

L Ref.

0.900 in

R Rad Max

0.028 in

T Across Hex. Ref.

0.500 in

Recommended Hole Size

0.3150-0.3185

J Dia Min

0.480 in

K Max

0.540 in

Break off Limits <4>

0.035-0.160

Tensile Structural Failure (Min)

3485 lb

Double Shear Min

12950 lb

Prevailing Torque Min

3.500 lb-in0.400 N-m

Material and Heat Treat

Nut: 6AL-4V titanium per AMS 4928 or AMS 4967; Heat treated per MIL-H81200 to 95 ksi shear strength minimum, maximum hydrogen 125 ppm
Corebolt: A-286 per AMS 5731, AMS 5732 or AMS 5737; heat treated to 175 ksi tensile min.
Sleeve: 304 stainless steel per AMS 5639; heat treated as required for performance.
Insert: Acetal per ASTM D4181
DryvcapTM: Mild steel.

Finish

(-) Nut: KAL-GARD ANN-RO #1012 conversion coating or phosphate flouride per AMS 2486 may be used at manufacturer´s option.
Sleeve & Corebolt: Passivate per AMS-QQ-P-35. KAL-GARD ANN-RO #1013 conversion coating optional.
Insert: None
Dryvcap

Lubricants

The following lubricants may be applied to any or all components in any combination as required for performance unless otherwise specified: Dry film lube per AS5272, Type I, everlube #812, paraffin wax, or cetyl alcohol.

Applicable Specification

Procurement specification: FCBF208
Special lube and finish: FCBF202

Material Type

Titanium

Rated Shear Strength

75 KSI

Headstyle

Protruding