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Strut & Supply

Fasteners

Hex Head Cap Screws

hex-head-cap-screws
Part NumberSize
HHCS025044EG1⁄4" x 7⁄16"
HHCS025075EG1⁄4" x 3⁄4"
HHCS025150EG1⁄4" x 11⁄2"
HHCS031125EG5⁄16" x 11⁄4"
HHCS037075EG3⁄8" x 3⁄4"
HHCS037087EG3⁄8" x 7⁄8"
HHCS037100EG3⁄8" x 1"
HHCS037125EG3⁄8" x 11⁄4"
HHCS037150EG3⁄8" x 11⁄2"
HHCS037200EG3⁄8" x 2"
HHCS037225EG3⁄8" x 21⁄4"
HHCS037250EG3⁄8" x 21⁄2"
HHCS050094EG1⁄2" x 15⁄16"
HHCS050119EG1⁄2" x 13⁄16"
HHCS050125EG1⁄2" x 11⁄4"
HHCS050150EG1⁄2" x 11⁄2"
HHCS050175EG1⁄2" x 13⁄4"
HHCS050200EG1⁄2" x 2"
HHCS050225EG1⁄2" x 21⁄4"
HHCS050250EG1⁄2" x 21⁄2"

Square Nuts

Part NumberSize
HSQN025EG1⁄4"
HSQN031EG5⁄16"
HSQN037EG3⁄8"
HSQN050EG1⁄2"
HSQN062EG5⁄8"
HSQN075EG3⁄4"
HSQN087EG7⁄8"
HSQN100EG1"

Hex Slotted Machine Screws

Hex-slotted-machine-screw
Part NumberSize
HSHS025050EG1⁄4" x 1⁄2"
HSHS025062EG1⁄4" x 5⁄8"
HSHS025075EG1⁄4" x 3⁄4"
HSHS031100EG5⁄16" x 1"
HSHS031125EG5⁄16" x 11⁄4"
HSHS031150EG5⁄16" x 11⁄2"
HSHS037125EG3⁄8" x 11⁄4"

Cone Point Set Screws

cone-point-set-screws
Part NumberSize
HCSS025100EG1⁄4" x 1"
HCSS031150EG5⁄16" x 11⁄2"
HCSS037150EG3⁄8" x 11⁄2"
HCSS037200EG3⁄8" x 2"
HCSS050150EG1⁄2" x 11⁄2"
HCSS050200EG1⁄2" x 2"
HCSS062150EG5⁄8" x 11⁄2"
HCSS062200EG5⁄8" x 2"

Hexagon Nuts

Part NumberSize
HHXN025EG1⁄4"
HHXN031EG5⁄16"
HHXN037EG3⁄8"
HHXN050EG1⁄2"
HHXN062EG5⁄8"
HHXN075EG3⁄4"
HHXN087EG7⁄8"
HHXN100EG1"

Flat Head Machine Screws

flat-head-machine-screw
Part NumberSize
HFMS025062EG1⁄4" x 5⁄8"
HFMS031100EG5⁄16" x 1"
HFMS050100EG1⁄2" x 1"

Round Head Machine Screws

round-head-machine-screws
Part NumberSize
HRMS025050EG1⁄4" x 1⁄2"
HRMS025075EG1⁄4" x 3⁄4"
HRMS025100EG1⁄4" x 1"
HRMS031100EG5⁄16" x 1"
HRMS031125EG5⁄16" x 11⁄4"
HRMS037100EG3⁄8" x 1"
HRMS037125EG3⁄8" x 11⁄4"
HRMS037150EG3⁄8" x 11⁄2"

Flat Washers

flat-washers
Part NumberSize
HFLW025EG1⁄4"
HFLW031EG5⁄16"
HFLW037EG3⁄8"
HFLW050EG1⁄2"
HFLW062EG5⁄8"
HFLW075EG3⁄4"
HFLW087EG7⁄8"
HFLW100EG1"

Steel Threaded Rod

steel-threaded-rod

Low Carbon Steel Grade 1006 – 1010
Fy = 36,000 psi minimum
Ft = 58,000 psi minimum

Part NumberSize
HTHR0251⁄4" x 20
HTHR0315⁄16" x 18
HTHR0373⁄8" x 16
HTHR0447⁄16" x 14
HTHR0501⁄2" x 13
HTHR0625⁄8" x 11
HTHR0753⁄4" x 10
HTHR0877⁄8" x 9
HTHR1001" x 8

Lock Washers

Lock Washers
Part NumberSize
HLKW025EG1⁄4"
HLKW031EG5⁄16"
HLKW037EG3⁄8"
HLKW050EG1⁄2"
HLKW062EG5⁄8"
HLKW075EG3⁄4"
HLKW087EG7⁄8"
HLKW100EG1"

Load Carrying Capacity Of Threaded Hot Rolled Steel Conforming To ASTM A575 And A576

Threaded Rod Loads for Piping Applications (based on MSS SP-58)
Nominal
Dia.		Root Area
In2 (mm2)		Max. Safe Load
at 650F (343 C)
Lbs (kN)
3⁄80.068 (43.9)730 (3.25)
1⁄20.126 (81.3)1,350 (6.01)
5⁄80.202 (130.3)2,160 (9.61)
3⁄40.302 (194.8)3,230 (14.37)
7⁄80.419 (270.3)4,480 (19.93)
10.552 (356.1)5,900 (26.24)
Threaded Rod Loads for Structural Applications (based on AISC, Steel Construction Manual, ASD, 14th Edition. Per AISC, Allowed Tensile Strength = 0.33 * Fu)
Nominal
Dia.		Nominal Area
In2 (mm2)		Allowed Tension Load
Lbs (kN)
1⁄40.049 (31.6)930 (4.14)
3⁄80.110 (71.0)2,110 (9.39)
7⁄160.150 (96.8)2,870 (12.77)
1⁄20.196 (126.5)3,750 (16.68)
5⁄80.307 (198.2)5,870 (26.11)
3⁄40.442 (285.4)8,450 (37.59)
7⁄80.601 (388.0)11,500 (51.15)
10.785 (506.8)15,030 (66.86)

Steel Coupler Nuts

steel-coupler-nuts
Part NumberSizeLength In (MM)
HRCN0251⁄4" - 207⁄8" (22.2)
HRCN0315⁄16" - 1813⁄4" (44.5)
HRCN0373⁄8" - 1613⁄4" (44.5)
HRCN0447⁄16" - 1413⁄4" (44.5)
HRCN0501⁄2" - 1313⁄4" (44.5)
HRCN0625⁄8" - 1121⁄8" (54.0)
HRCN0753⁄4" - 1021⁄4" (57.2)
HRCN0877⁄8" - 921⁄2" (63.5)
HRCN1001" - 823⁄4" (69.9)

Materials and Finishes Fasteners

Material

Screws conform to SAE J429 GR 2 (exceeds ASTM A307).
Proof Load 55KSI, Tensile Load 74 KSI

Finishes

Fasteners such as Hex Nuts bolts and washers are Electro-Galvanized (EG), ASTM B633 Type III SC1 finish, unless otherwise noted.

Many fasteners are also available in other finishes.

Many Unistrut nuts, bolts and hardware items are also available in standard metric dimensions.

Threads

Unistrut nuts and bolts are manufactured to meet the Unified Screw Thread standard, ANSI B1.1, coarse series (UNC) class 2.

Design Bolt Torque

Bolt Size1⁄4"-205⁄16"-183⁄8"-161⁄2"-135⁄8"-113⁄4"-10
Rec.Torque
Ft/Lbs (N•m)		6
(8)		11
(15)		19
(26)		50
(68)		100
(136)		125
(170)
Max Torque
Ft/Lbs (N•m)		7
(9)		15
(20)		25
(34)		70
(95)		125
(170)		135
(183)