BOM

The HUCKBOM™ Blind Fastening System

High-strength industrial blind bolt. Meets ASTM A307 strength requirements. Use in situations where a two-piece fastener would commonly be used. BOM fasteners install from just one side by a single worker saving time and reducing cost.


Dimension Data

Dia.
(No.)
A B C max D E
3/16 (6) .286 -.276 .152 -.168 0.015 .206 -.196 0.785
1/4 (8) .380 -.368 .205 -.225 0.02 .275 -.262 0.86
5/16 (10) .478 -.468 .266 -.278 0.025 .346 -.332 1.285
3/8 (12) .563 -.553 .315 -.327 0.03 .411 -.393 1.23
1/2 (16) .755 -.745 .415 -.438 0.035 .544 -.529 1.53
5/8 (20) .941 -.931 .507 -.545 0.04 .685 -.662 1.71
3/4 (24) 1.130 -1.120 .637 -.654 0.05 .816 -.795 2.15


Installed Dimensions

Dia. F nom G min H max J max K max L max
3/16 0.177 7/64 3/32 0.261 1/32 0.306
1/4 0.232 5/32 3/32 0.346 1/32 0.405
5/16 0.304 3/16 11/64 0.434 3/64 0.517
3/8 0.357 13/64 11/64 0.51 3/64 0.605
1/2 0.475 19/64 11/64 0.686 1/16 0.841
5/8 0.595 13/32 5/16 0.874 5/64 1.038
3/4 0.722 0.4375 0.3125 1.027 5/64 1.267


Grip Data

6 (3/16) Dia.
Grip No.
Hole Size=.208-.222 (7/32)
Range
M ref N max
2 .093 -.156 0.376 0.5
3 .157 -.219 0.439 0.562
4 .220 -.281 0.501 0.625
5 .282 -.344 0.564 0.687
6 .345 -.406 0.626 0.75
7 .407 -.469 0.689 0.812
8 .470 -.531 0.751 0.875
9 .532 -.594 0.814 0.937
10 .595 -.656 0.876 1
11 .657 -.719 0.939 1.062
12 .720 -.781 1.001 1.125

8 (1/4) Dia.
Grip No.
Hole Size=.277-.292 (9/32)
Range
M ref N max
2 .093 -.156 0.46 0.62
3 .157 -.219 0.523 0.682
4 .220 -.281 0.585 0.745
5 .282 -.344 0.648 0.807
6 .345 -.406 0.71 0.87
7 .407 -.469 0.773 0.932
8 .470 -.531 0.835 0.995
9 .532 -.594 0.898 1.057
10 .595 -.656 0.96 1.12
11 .657 -.719 1.023 1.182
12 .720 -.781 1.085 1.245

10 (5/16) Dia.
Grip No.
Hole Size=.348-.368
Range
M ref N max
4 .188 -.312 0.695 0.875
6 .313 -.437 0.82 1
8 .438 -.562 0.945 1.125
10 .563 -.687 1.07 1.25
12 .688 -.812 1.195 1.375
14 .813 -.937 1.32 1.5
16 .938 -1.062 1.445 1.625

12 (3/8) Dia.
Grip No.
Hole Size=.413-.435
Range
M ref N max
4 .188 -.312 0.766 0.969
6 .313 -.437 0.891 1.094
8 .438 -.562 1.016 1.219
10 .563 -.687 1.141 1.344
12 .688 -.812 1.266 1.469
14 .813 -.937 1.391 1.594
16 .938 -1.062 1.516 1.719
18 1.063 - 1.187 1.641 1.844
20 1.188 - 1.312 1.77 1.969

16 (1/2) Dia.
Grip No.
Hole Size=.546-.581 (9/16)
Range
M ref N max
4 .251 -.375 1 1.266
6 .376 -.500 1.125 1.391
8 .501 -.625 1.25 1.516
10 .626 -.750 1.375 1.641
12 .751 -.875 1.5 1.766
14 .876 -1.000 1.625 1.891
16 1.001 -1.125 1.75 2.016
18 1.126 -1.250 1.875 2.141
20 1.251 -1.375 2 2.266
22 1.376 -1.500 2.125 2.391
24 1.501 -1.625 2.25 2.516

20 (5/8) Dia.
Grip No.
Hole Size=.687-.728 (11/16)
Range
M ref N max
4 .251 -.500 1.213 1.531
8 .501 -.750 1.463 1.781
12 .751 -1.000 1.713 2.031
16 1.001 -1.250 1.963 2.281
20 1.251 -1.500 2.213 2.531

24 (3/4) Dia.
Grip No.
Hole Size=.828-.873 (13/16)
Range
M ref N max
4 .251 -.500 1.38 1.75
8 .501 -.750 1.63 2
12 .751 -1.000 1.88 2.25
16 1.001 -1.250 2.13 2.5


Installed Values in Nominal Grip (lbs.)

Diameter Shear Tensile
3/16 2800 1800
1/4 5100 3250
5/16 8050 5200
3/8 11100 7250
1/2 20150 13000
5/8 31900 20500
3/4 45100 29100


Material, Finish and Lubrication

Material Finish Lubrication
Sleeve Carbon Steel Zinc plating per specification
ASTM B695 or ASTM B633
Meets specifications of
QQ-Z-325 and MIL-C-81562
Wax Film
Pin 3/16-5/16 Dia. Carbon Steel None Wax Film
3/8-3/4 Dia. Alloy Steel None Wax Film


Installation Tooling

Dia. Installation
Tool
Nose Assembly Type Use
3/16 230 99-994 Pneudraulic Maintenance & Repair
2025 99-994 Pneudraulic Maintenance & Repair
212 99-994 Pneudraulic Production
245 99-1053 (heavy duty) Pneudraulic Production
246 99-1053 (heavy duty) Pneudraulic Production
2480 99-994 Hydraulic Production
2580 99-1053 (heavy duty) Hydraulic Maintenance & Repair
1/4 245 99-830-1 Pneudraulic Production
246 99-830-1 Pneudraulic Production
2580 99-830-1 Hydraulic Production
5/16 246 99-769 Pneudraulic Production
2580 99-769 Hydraulic Production
2600 99-3119 Hydraulic Production
3/8 2600 99-3122 Hydraulic Production
1/2 FE5901 99-5100 Hydraulic Production
5901 99-5100 Hydraulic Production
5/8 585 99-5102 Hydraulic Production
586 99-5102 Hydraulic Production
3/4 586 99-5103 Hydraulic Production