1/4 UNC – Set-Screws / Bolts Hexagon Head Zinc Plated Cr3 SAE Grade 5
1/4″ – 20 UNC Set Screws / Bolts. The thread length is calculated as; 2 x Diameter + 1/2 inch, The total length will be made up of plain shank after this length.
High Tensile SAE Grade 5. These items are Bright Zinc Plated Cr3 to BS 3382.
Our plating complies with EU legislation, see here:
Hexagon Set-Screws are fully threaded
Hexagon Bolts are partly threaded
Listed by thread size, not AF/Spanner size
The correct spanner size for 1/4″ UNC is a 7/16″ AF
Head over and check out our range of Tools
Size / Thread Thread / Shank Length (Combined)
1/4″ – 20 UNC x 1/2 Inch
1/4″ – 20 UNC x 5/8 Inch
1/4″ – 20 UNC x 3/4 Inch
1/4″ – 20 UNC x 7/8 Inch
1/4″ – 20 UNC x 1 Inch
1/4″ – 20 UNC x 1 1/4 Inch
1/4″ – 20 UNC x 1 1/2 Inch
1/4″ – 20 UNC x 1 3/4 Inch
1/4″ – 20 UNC x 2 Inch
1/4″ – 20 UNC x 2 1/4 Inch
1/4″ – 20 UNC x 2 1/2 Inch
1/4″ – 20 UNC x 2 3/4 Inch
1/4″ – 20 UNC x 3 Inch
1/4″ – 20 UNC x 3 1/2 Inch
1/4″ – 20 UNC x 4 Inch
1/4″ – 20 UNC x 4 1/2 Inch
1/4″ – 20 UNC x 5 Inch
Found on
Jaguar, Classic Mini, Morris Morris, MG Midget, MGA and MGB etc
For further information, please send us an email
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