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ACCU-LOK® IIA blind fastener for composite application 100° flush head, ground shank titanium, 75 KSI shear.
Unit of Measure

Dash Number (Grip)

N/A 550

Grip Range - Min. Grip

N/A 0.500 in

Grip Range - Max. Grip

N/A 0.550 in

Grip Range

N/A 0.500-0.550 in

A Theo. Dia

N/A 0.332 in

B Dia Min

N/A 0.296 in

D Dia

N/A 0.168 in

E Dia Max

N/A 0.164 in

F Wrench Flats

N/A 0.085 in

G Ref.

N/A 0.017 in

H Ref.

N/A 0.070 in

L Ref.

N/A 0.450 in

R Rad Max

N/A 0.030 in

S Max

N/A 0.015 in

Minimum available grip length

N/A -150

Recommended Hole Size

N/A 0.165-0.168

J Dia Min

N/A 0.250 in

K Max

N/A 0.300 in

Break off Limits <5>

N/A 0.050-0.053

Tensile Structural Failure (Min)

N/A 900 lb

Double Shear Min

N/A 3150 lb

Locking Torque Min

N/A 1.000 lb-in0.113 N-m

V Gage Prot.

N/A 0.021 in

W Gage Dia

N/A 0.283 in

Material and Heat Treat

N/A Nut: 6AL-4V titanium per AMS4928 or AMS4967; heat treated per MIL-H-B1200 to 95 ksi shear strength minimum. Maximum hydrogen content 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

Finish

N/A (-) Nut: KAL-GARD ANN-RO #1012 conversion coating or phosphate flouride per AMS2486 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

Lubricants

N/A 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 per MIL-L-87132.

Applicable Specification

N/A Procurement specification: FCBF200
Special lube and finish: FCBF202

Material Type

N/A Titanium

Rated Shear Strength

N/A 75 KSI

Headstyle

N/A 100° Flush

Notes

N/A 2.Locking feature consists of three (3) indentations located 120° apart on the periphery of the nut component and approximately .040" above intersection of the nut nose angle and O.D.
3.Composite blind fastener with selected combinations of the above lubrications and finishes are specially coded and may be substituted for equivalent non-coded parts at manufacturer´s option. Contact Fairchild Engineering.
<4> Distortion shall not prevent insertion of the fastener into a ring gauge of length equal to one diameter and hole diameter equal to a minimum recommended hole. Force for insertion shall not exceed 5.0 lbs.
<5> An "L" in place of the dash (-) between the diameter dash number and grip dash number designates modified break-off limits of +.053/-.050. "EX: FCBF3014( )-6L200".