Westfield Fasteners Ltd Logo
Westfield Fasteners Ltd Telephone: 01844201133, Email: enquiries@westfieldfasteners.co.uk
Home   /   UNF Bolts, Nuts and Washers   /   4-48 inch UNF Socket Head Cap Screws ASME B18. 3-2003 in A2 Stainless Steel

4-48 inch UNF Socket Head Cap Screws ASME B18. 3-2003 in A2 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw, socket head cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ASME/ANSI B18.3, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination.
Image of UNF Socket Head Cap Screws ASME B18. 3-2003 in A2 image
technical drawing of UNF Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 4-48
tpi threads per inch 48
b minimum thread length 0.75
dk head diameter 0.183
k max. maximum head height 0.112
t min. minimum recess depth 0.051
s drive size 3/32
Standard ASME B18.3/ASTM F837(CW)
all dimensions in inches
Datasheet
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
4-48 x 3/16 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36025 - 2096 in stock
sachet of 3 for £1.40
or box of 300 for £24.57
or bulk of 1500 for £84.78
£0.00  
4-48 x 1/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36027 - 295 in stock
sachet of 2 for £1.69
or box of 100 for £14.89
or bulk of 500 for £54.68
£0.00  
4-48 x 3/8 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36028 - 1234 in stock
sachet of 3 for £1.75
or box of 200 for £20.69
or bulk of 1000 for £72.50
£0.00  
4-48 x 1/2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36030 - 642 in stock
sachet of 2 for £1.74
or box of 100 for £15.37
or bulk of 500 for £56.24
£0.00  
4-48 x 5/8 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36031 - 2337 in stock
sachet of 2 for £1.33
or box of 150 for £17.75
or bulk of 750 for £63.66
£0.00  
4-48 x 3/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36033 - 426 in stock
sachet of 2 for £2.40
or box of 100 for £21.22
or bulk of 500 for £73.98
£0.00  
4-48 x 7/8 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36034 - 2420 in stock
sachet of 2 for £1.57
or box of 150 for £20.79
or bulk of 750 for £73.02
£0.00  
4-48 x 1 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36036 - 2291 in stock
sachet of 2 for £2.14
or box of 100 for £18.93
or bulk of 500 for £67.22
£0.00  
4-48 x 1-1/2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36038 - 276 in stock
single screw for £1.98
or box of 60 for £21.00
or bulk of 300 for £73.40
£0.00  
sachet of 3 for £1.40
or box of 300 for £24.57
or bulk of 1500 for £84.78
£0.00
 
sachet of 2 for £1.69
or box of 100 for £14.89
or bulk of 500 for £54.68
£0.00
 
sachet of 3 for £1.75
or box of 200 for £20.69
or bulk of 1000 for £72.50
£0.00
 
sachet of 2 for £1.74
or box of 100 for £15.37
or bulk of 500 for £56.24
£0.00
 
sachet of 2 for £1.33
or box of 150 for £17.75
or bulk of 750 for £63.66
£0.00
 
sachet of 2 for £2.40
or box of 100 for £21.22
or bulk of 500 for £73.98
£0.00
 
sachet of 2 for £1.57
or box of 150 for £20.79
or bulk of 750 for £73.02
£0.00
 
sachet of 2 for £2.14
or box of 100 for £18.93
or bulk of 500 for £67.22
£0.00
 
single screw for £1.98
or box of 60 for £21.00
or bulk of 300 for £73.40
£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 drawing of UNF Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 4-48
tpi threads per inch 48
b minimum thread length 0.75
dk head diameter 0.183
k max. maximum head height 0.112
t min. minimum recess depth 0.051
s drive size 3/32
Standard ASME B18.3/ASTM F837(CW)
all dimensions in inches
Datasheet
FSB logo CBI logo