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ACCU-LOK® 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 0.385 in

B Dia Min

N/A 0.342 in

D Dia

N/A 0.199 in

E Dia Max

N/A 0.199 in

F Wrench Flats

N/A 0.113 in

G Ref

N/A 0.027 in

H Ref

N/A 0.077 in

L Max

N/A 0.618 in

R Rad

N/A 0.030 in

S Max

N/A 0.019 in

Minimum available grip length

N/A -150

Recommended Hole Size

N/A 0.199-0.202

J Dia Min

N/A 0.300 in

K Max

N/A 0.350 in

Break off Limits <5>

N/A 0.000-0.103

Tensile Structural Failure (Min)

N/A 1400 lb

Double Shear Min

N/A 4600 lb

Locking Torque Min

N/A 1.500 lb-in0.170 N-m

V Gage Prot.

N/A 0.025 in

W Gage Dia

N/A 0.327 in

Material and Heat Treat

N/A Nut: 6AL-4V titanium per AMS4928 or AMS4967; heat treated per MIL-H-81200 to 95 ksi shear strength minimum. Maximum hydrogen content 125 ppm.
Screw: A-286 per AMS 5731 or AMS 5734; heat treated to 175 ksi tensile min.
Sleeve: 304 stainless steel per AMS 5639, heat treat 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 & screw: 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, parafin 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 fasteners with selected combinations of the above lubrications and finishes are specially coded and may be substituted for equivalent non-coded parts at manufactures 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. Insertion force shall not exceed 5.0 lbs.
<5> An "L" in place of the dash (-) between the diameter dash number and the grip dash number designates modified break-off limits of +.053/.050. "EX: FCBF2012( )-6L200".