Home / UNC Bolts, Nuts and Washers / 1/4 inch UNC Hex Head Bolts ASME B18.2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

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1/4 inch UNC Hex Head Bolts ASME B18.2.1 in Bright Zinc Plated (BZP) USA Grade 5 High Tensile Steel

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ASME B18.2.1, and includes an unthreaded section of the shaft. A hex drive permits a greater torque load to be applied to the joint over most other drive types.

Image of UNC Hex Head Bolts ASME B18.2.1 in BZP-G5 image

technical drawing of UNC Hex Head Bolts ASME B18.2.1

Technical Summary

nominal diameter

1/4

tpi

threads per inch

b nom. (inch)

nominal thread length

0.750

k max. (inch)

head height

0.188

s max. (inch)

drive size

0.438

Standard

ASME B18.2.1 / SAE J429

all dimensions in inches

Datasheet

< View All Sizes

Description	Sale Qtys	Price
Hex Bolt Part Thread UNC 1/4 x 1-1/4 inch in BZP Grade 5 Steel WF28278 - 443 in stock	sachet of 2 for £2.56 or box of 100 for £26.33 or bulk of 500 for £118.90	£0.00
Hex Bolt Part Thread UNC 1/4 x 1-3/8 inch in BZP Grade 5 Steel WF28279 - 276 in stock	single bolt for £1.47 or box of 40 for £9.59 or bulk of 200 for £44.93	£0.00
Hex Bolt Part Thread UNC 1/4 x 1-1/2 inch in BZP Grade 5 Steel WF28280 - 215 in stock	sachet of 2 for £1.84 or box of 100 for £15.68 or bulk of 500 for £68.84	£0.00
Hex Bolt Part Thread UNC 1/4 x 1-3/4 inch in BZP Grade 5 Steel WF28281 - 286 in stock	sachet of 2 for £2.59 or box of 100 for £27.82 or bulk of 500 for £125.62	£0.00
Hex Bolt Part Thread UNC 1/4 x 2 inch in BZP Grade 5 Steel WF28282 - 117 in stock	sachet of 2 for £2.82 or box of 100 for £39.36 or bulk of 500 for £183.01	£0.00
Hex Bolt Part Thread UNC 1/4 x 2-1/4 inch in BZP Grade 5 Steel WF28283 - 272 in stock	single bolt for £1.59 or box of 80 for £21.01 or bulk of 400 for £93.52	£0.00
Hex Bolt Part Thread UNC 1/4 x 2-1/2 inch in BZP Grade 5 Steel WF28284 - 891 in stock	single bolt for £1.47 or box of 80 for £19.56 or bulk of 400 for £86.59	£0.00
Hex Bolt Part Thread UNC 1/4 x 2-3/4 inch in BZP Grade 5 Steel WF28285 - 256 in stock	single bolt for £1.80 or box of 80 for £23.60 or bulk of 400 for £105.15	£0.00
Hex Bolt Part Thread UNC 1/4 x 3 inch in BZP Grade 5 Steel WF28286 - 284 in stock	single bolt for £2.61 or box of 80 for £44.47 or bulk of 400 for £208.17	£0.00
Hex Bolt Part Thread UNC 1/4 x 3-1/4 inch in BZP Grade 5 Steel WF28287 - 24 in stock	single bolt for £2.75 or box of 30 for £22.04 or bulk of 150 for £100.80	£0.00
Hex Bolt Part Thread UNC 1/4 x 3-1/2 inch in BZP Grade 5 Steel WF28288 - 265 in stock	single bolt for £2.74 or box of 30 for £21.75 or bulk of 150 for £99.17	£0.00
Hex Bolt Part Thread UNC 1/4 x 3-3/4 inch in BZP Grade 5 Steel WF28289 - 126 in stock	single bolt for £2.62 or box of 20 for £12.12 or bulk of 100 for £55.94	£0.00
Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel WF28290 - 418 in stock	single bolt for £2.60 or box of 30 for £17.23 or bulk of 150 for £77.59	£0.00
Hex Bolt Part Thread UNC 1/4 x 4-1/2 inch in BZP Grade 5 Steel WF28291 - 109 in stock	single bolt for £2.58 or box of 20 for £11.07 or bulk of 100 for £50.47	£0.00
Hex Bolt Part Thread UNC 1/4 x 5 inch in BZP Grade 5 Steel WF28292 - 58 in stock	single bolt for £3.06 or box of 15 for £16.12 or bulk of 75 for £74.55	£0.00
Hex Bolt Part Thread UNC 1/4 x 5-1/2 inch in BZP Grade 5 Steel WF28293 - 100 in stock	single bolt for £3.81 or box of 15 for £28.10 or bulk of 75 for £130.84	£0.00
Hex Bolt Part Thread UNC 1/4 x 6 inch in BZP Grade 5 Steel WF28294 - 44 in stock	single bolt for £3.05 or box of 10 for £10.70 or bulk of 50 for £50.15	£0.00

Hex Bolt Part Thread UNC 1/4 x 1-1/4 inch in BZP Grade 5 Steel
WF28278 - 443 in stock

sachet of 2 for £2.56
or box of 100 for £26.33
or bulk of 500 for £118.90

£0.00

Hex Bolt Part Thread UNC 1/4 x 1-3/8 inch in BZP Grade 5 Steel
WF28279 - 276 in stock

single bolt for £1.47
or box of 40 for £9.59
or bulk of 200 for £44.93

£0.00

Hex Bolt Part Thread UNC 1/4 x 1-1/2 inch in BZP Grade 5 Steel
WF28280 - 215 in stock

sachet of 2 for £1.84
or box of 100 for £15.68
or bulk of 500 for £68.84

£0.00

Hex Bolt Part Thread UNC 1/4 x 1-3/4 inch in BZP Grade 5 Steel
WF28281 - 286 in stock

sachet of 2 for £2.59
or box of 100 for £27.82
or bulk of 500 for £125.62

£0.00

Hex Bolt Part Thread UNC 1/4 x 2 inch in BZP Grade 5 Steel
WF28282 - 117 in stock

sachet of 2 for £2.82
or box of 100 for £39.36
or bulk of 500 for £183.01

£0.00

Hex Bolt Part Thread UNC 1/4 x 2-1/4 inch in BZP Grade 5 Steel
WF28283 - 272 in stock

single bolt for £1.59
or box of 80 for £21.01
or bulk of 400 for £93.52

£0.00

Hex Bolt Part Thread UNC 1/4 x 2-1/2 inch in BZP Grade 5 Steel
WF28284 - 891 in stock

single bolt for £1.47
or box of 80 for £19.56
or bulk of 400 for £86.59

£0.00

Hex Bolt Part Thread UNC 1/4 x 2-3/4 inch in BZP Grade 5 Steel
WF28285 - 256 in stock

single bolt for £1.80
or box of 80 for £23.60
or bulk of 400 for £105.15

£0.00

Hex Bolt Part Thread UNC 1/4 x 3 inch in BZP Grade 5 Steel
WF28286 - 284 in stock

single bolt for £2.61
or box of 80 for £44.47
or bulk of 400 for £208.17

£0.00

Hex Bolt Part Thread UNC 1/4 x 3-1/4 inch in BZP Grade 5 Steel
WF28287 - 24 in stock

single bolt for £2.75
or box of 30 for £22.04
or bulk of 150 for £100.80

£0.00

Hex Bolt Part Thread UNC 1/4 x 3-1/2 inch in BZP Grade 5 Steel
WF28288 - 265 in stock

single bolt for £2.74
or box of 30 for £21.75
or bulk of 150 for £99.17

£0.00

Hex Bolt Part Thread UNC 1/4 x 3-3/4 inch in BZP Grade 5 Steel
WF28289 - 126 in stock

single bolt for £2.62
or box of 20 for £12.12
or bulk of 100 for £55.94

£0.00

Hex Bolt Part Thread UNC 1/4 x 4 inch in BZP Grade 5 Steel
WF28290 - 418 in stock

single bolt for £2.60
or box of 30 for £17.23
or bulk of 150 for £77.59

£0.00

Hex Bolt Part Thread UNC 1/4 x 4-1/2 inch in BZP Grade 5 Steel
WF28291 - 109 in stock

single bolt for £2.58
or box of 20 for £11.07
or bulk of 100 for £50.47

£0.00

Hex Bolt Part Thread UNC 1/4 x 5 inch in BZP Grade 5 Steel
WF28292 - 58 in stock

single bolt for £3.06
or box of 15 for £16.12
or bulk of 75 for £74.55

£0.00

Hex Bolt Part Thread UNC 1/4 x 5-1/2 inch in BZP Grade 5 Steel
WF28293 - 100 in stock

single bolt for £3.81
or box of 15 for £28.10
or bulk of 75 for £130.84

£0.00

Hex Bolt Part Thread UNC 1/4 x 6 inch in BZP Grade 5 Steel
WF28294 - 44 in stock

single bolt for £3.05
or box of 10 for £10.70
or bulk of 50 for £50.15

£0.00

Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.

Technical Summary

nominal diameter

1/4

tpi

threads per inch

b nom. (inch)

nominal thread length

0.750

k max. (inch)

head height

0.188

s max. (inch)

drive size

0.438

Standard

ASME B18.2.1 / SAE J429

all dimensions in inches

Datasheet