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ACCU-LOK® IIA blind fastener for composite application 100° flush head titanium.
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 Dia Ref.

N/A 0.332 in

B Dia Min

N/A 0.296 in

D Dia

N/A 0.165 in

E Dia Max

N/A 0.164 in

F Wrench Flats

N/A 0.085 in

G Ref.

N/A 0.058 in

H Ref.

N/A 0.070 in

L Ref.

N/A 0.625 in

R Rad

N/A 0.030 in

S Max

N/A 0.015 in

T Across Hex. Ref

N/A 0.375 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 0.370 in

Break off Limits <5>

N/A 0.000-0.103

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 AMS 4928 or AMS 4967. Heat treated per MIL-H-81200 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 tensil min.
Sleeve: 304 stainless steel per AMS 5639; heat treated as required for performance.
Insert: Acetal per ASTM D4181
DryvcapTM: Mild steel.

Finish

N/A (-) 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

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: FCBF208
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 manufacture´s option. Contact Fairchild Engineering.
4. These parts are similar to FCBF2112 except as follows:
A. Improved out-of-grip flagging capacity (corebolt B/O)
B. Increased blind side protrusion before and after upset
C. Increased installed weight
<5> An "L" in place of the dash (-) between the diameter dash number and the grip dash number designates modified break-off +.053/-.050. "EX: FCBF3005( )-6L200".
<6>Distortion shall not prevent insertion of the fastener into a ring gauge of length equal to one diameter and hole diameter equal to minimum recommended hole size. Insertion force shall not exceed 5.0 lbs.