UNF Hex Head Bolts | Imperial Fine Thread

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We supply UNF hex head bolts manufactured to Unified National Fine thread specifications. UNF bolts feature a finer thread pitch than UNC, providing improved clamping precision and increased resistance to loosening under vibration.

Commonly used in automotive, machinery and precision engineering applications, UNF hex head bolts are ideal where a finer adjustment and higher tensile stress area are required.

Available in a range of UNF imperial sizes and strength grades including high tensile and stainless steel options, our bolts provide reliable fastening for industrial and workshop use.

Bulk quantities available with competitive trade pricing and fast UK delivery.

5/16" UNF Grade 5 (8.8) Self Colour Steel Part Threaded Hex Head Bolts

£0.31 (Inc. VAT)

£0.26 (Ex. VAT)

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1/4" UNF Self Colour Steel Grade 5 (8.8) Hex Head Part Threaded Bolts

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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5/16" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£0.28 (Inc. VAT)

£0.23 (Ex. VAT)

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3/8" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£0.56 (Inc. VAT)

£0.47 (Ex. VAT)

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10-32 UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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1/4" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£0.32 (Inc. VAT)

£0.27 (Ex. VAT)

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7/16" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

£0.36 (Inc. VAT)

£0.30 (Ex. VAT)

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5/16" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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3/4" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

£3.26 (Inc. VAT)

£2.72 (Ex. VAT)

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7/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

£2.22 (Inc. VAT)

£1.85 (Ex. VAT)

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5/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

£0.94 (Inc. VAT)

£0.78 (Ex. VAT)

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3/8" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

£0.97 (Inc. VAT)

£0.81 (Ex. VAT)

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1/4" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

£0.38 (Inc. VAT)

£0.32 (Ex. VAT)

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3/4" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

£4.27 (Inc. VAT)

£3.56 (Ex. VAT)

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5/8" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

£1.88 (Inc. VAT)

£1.57 (Ex. VAT)

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9/16" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

£1.34 (Inc. VAT)

£1.12 (Ex. VAT)

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5/16" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

£0.40 (Inc. VAT)

£0.33 (Ex. VAT)

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1/2" UNF 8.8 Grade 5 Self Colour Steel Black Part Threaded Hex Bolts

£1.24 (Inc. VAT)

£1.03 (Ex. VAT)

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7/16" UNF 8.8 Grade 5 Self Colour Steel Black Part Threaded Hex Bolts

£0.76 (Inc. VAT)

£0.63 (Ex. VAT)

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1/2" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£2.06 (Inc. VAT)

£1.72 (Ex. VAT)

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1/2" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

£0.95 (Inc. VAT)

£0.79 (Ex. VAT)

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9/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

£4.48 (Inc. VAT)

£3.73 (Ex. VAT)

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7/16" UNF Grade 8 Yellow Zinc Part Threaded Hex Bolts

£2.47 (Inc. VAT)

£2.06 (Ex. VAT)

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9/16" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

£1.64 (Inc. VAT)

£1.37 (Ex. VAT)

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5/16" UNF Grade 5 (8.8) Self Colour Steel Part Threaded Hex Head Bolts

ABCDEFG 5/16" 1 1/2" 7/8" 1/2" 7/32" 24 5/8" 5/16" 1 3/4" 7/8" 1/2" 7/32" 24 7/8" 5/16" 2" 7/8" 1/2" 7/32" 24 1 1/8" 5/16" 2 1/2" 7/8" 1/2" 7/32" 24 1 5/8" 5/16" 3" 7/8" 1/2" 7/32" 24 2...

£0.31 (Inc. VAT)

£0.26 (Ex. VAT)

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1/4" UNF Self Colour Steel Grade 5 (8.8) Hex Head Part Threaded Bolts

Thread - UNF (AF) Grade - 8.8 Grade 5 High Tensile Steel Type - Part Threaded Finish - Self Colour Steel (Black) ABCDEFG 1/4" 1 1/4" 3/4" 7/16" 5/32" 28 1/4" 1/4" 1 1/2" 3/4" 7/16" 5/32" 28 3/4" 1/4" 1...

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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5/16" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread - UNF (Unified National Fine) ABCDE 5/16" 1 3/4" 1/2" 7/32" 24 5/16" 1 1/2" 1/2" 7/32" 24 5/16" 1...

£0.28 (Inc. VAT)

£0.23 (Ex. VAT)

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3/8" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread - UNF (Unified National Fine) ABCDE 3/8" 1 1/2" 9/16" 1/4" 24 3/8" 1...

£0.56 (Inc. VAT)

£0.47 (Ex. VAT)

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10-32 UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread - UNF (Unified National Fine) ABCDE 10-32 5/8" 5/16" 1/8" 32 10-32 1...

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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1/4" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread - UNF (Unified National Fine) ABCDE 1/4" 1 1/2" 7/16" 5/32" 28 1/4" 1...

£0.32 (Inc. VAT)

£0.27 (Ex. VAT)

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7/16" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

Material: Zinc Plated Steel Grade - 8.8 Grade 5 High Tensile Thread - UNF (Unified National Fine) ABCDE 7/16" 1 1/2" 5/8" 9/32" 20 7/16" 1...

£0.36 (Inc. VAT)

£0.30 (Ex. VAT)

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5/16" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

Material: Zinc Plated Steel Grade - 8.8 Grade 5 High Tensile Thread - UNF (Unified National Fine) ABCDE 5/16" 1 1/2" 1/2" 7/32" 24 5/16" 1...

£0.24 (Inc. VAT)

£0.20 (Ex. VAT)

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3/4" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

Material: Zinc Plated Steel Grade - 8.8 Grade 5 High Tensile Thread - UNF (Unified National Fine) ABCDE 3/4" 1 3/4" 1 1/8" 15/32" 16 3/4" 2" 1 1/8" 15/32" 16 3/4" 2 1/4" 1 1/8" 15/32" 16 3/4" 2 1/2" 1...

£3.26 (Inc. VAT)

£2.72 (Ex. VAT)

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7/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

Material: A2 Stainless Steel Type - UNF (Unified National Fine) (AF) Head Style - Hex Type - Bolt With Unthreaded Shank ABCDEFG 7/16" 1 3/4" 1 1/8" 5/8" 9/32" 20 5/8" 7/16" 2" 1 1/8" 5/8" 9/32" 20 7/8" 7/16" 3...

£2.22 (Inc. VAT)

£1.85 (Ex. VAT)

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5/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

Material: A2 Stainless Steel Type - UNF (Unified National Fine) (AF) Head Style - Hex Type - Bolt With Unthreaded Shank ABCDEFG 5/16" 1 1/2" 7/8" 1/2" 7/32" 24 5/8" 5/16" 1 3/4" 7/8" 1/2" 7/32" 24 7/8" 5/16" 2...

£0.94 (Inc. VAT)

£0.78 (Ex. VAT)

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3/8" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

Material: A2 Stainless Steel Type - UNF (Unified National Fine) (AF) Head Style - Hex Type - Bolt With Unthreaded Shank ABCDEFG 3/8" 1 1/2" 1" 9/16" 1/4" 24 1/2" 3/8" 1 3/4" 1" 9/16" 1/4" 24 3/4" 3/8" 2...

£0.97 (Inc. VAT)

£0.81 (Ex. VAT)

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1/4" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

Material: A2 Stainless Steel Type - UNF (Unified National Fine) (AF) Head Style - Hex Type - Bolt With Unthreaded Shank ABCDEFG 1/4" 1 1/2" 3/4" 7/16" 5/32" 28 3/4" 1/4" 1 3/4" 3/4" 7/16" 5/32" 28 5/8" 1/4" 2...

£0.38 (Inc. VAT)

£0.32 (Ex. VAT)

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3/4" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

Material: Grade 5 (Metric Equivalent 8.8) High Tensile Steel Type: UNF (Unified National Fine) (AF) Head Style: Hex Head Type: Bolt With Unthreaded Shank ABCDEFG 3/4" 2 3/4" 1 3/4" 1 1/8" 15/32" 16 2" 3/4" 3" 1 3/4" 1...

£4.27 (Inc. VAT)

£3.56 (Ex. VAT)

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5/8" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

Material: Grade 5 (Metric Equivalent 8.8) High Tensile Steel Type: UNF (Unified National Fine) (AF) Head Style: Hex Head Type: Bolt With Unthreaded Shank ABCDEFG 5/8" 2 1/2" 1 1/2" 15/16" 3/8" 18 1" 5/8" 2 1/4" 1...

£1.88 (Inc. VAT)

£1.57 (Ex. VAT)

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9/16" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

Material: Grade 5 (Metric Equivalent 8.8) High Tensile Steel Type: UNF (Unified National Fine) (AF) Head Style: Hex Head Type: Bolt With Unthreaded Shank ABCDEFG 9/16" 4 1/2" 1 3/8" 13/16" 3/8" 18 3 1/8" 9/16" 2 1/4" 1...

£1.34 (Inc. VAT)

£1.12 (Ex. VAT)

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5/16" UNF Zinc Plated Steel Hexagon Head Bolts With Shank

Material: Grade 5 (Metric Equivalent 8.8) High Tensile Steel Type: UNF (Unified National Fine) (AF) Head Style: Hex Head Type: Bolt With Unthreaded Shank ABCDEFG 5/16" 1 1/2" 7/8" 1/2" 7/32" 24 5/8" 5/16" 1...

£0.40 (Inc. VAT)

£0.33 (Ex. VAT)

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1/2" UNF 8.8 Grade 5 Self Colour Steel Black Part Threaded Hex Bolts

Material: High Tensile Grade 5 (Metric Equivalent 8.8) Self Colour Steel Thread: UNF (Unified National Fine) Type: Hexagon Bolts ABCDEFG 1/2" 7 1/2" 1 1/4" 3/4" 5/16" 20 6 1/4" 1/2" 8" 1 1/4" 3/4" 5/16" 20 6...

£1.24 (Inc. VAT)

£1.03 (Ex. VAT)

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7/16" UNF 8.8 Grade 5 Self Colour Steel Black Part Threaded Hex Bolts

Material: High Tensile Grade 5 (Metric Equivalent 8.8) Self Colour Steel Thread: UNF (Unified National Fine) Type: Hexagon Bolts ABCDEFG 7/16" 6 1/2" 1 1/8" 5/8" 9/32" 20 5 3/8" 7/16" 1 1/2" 1...

£0.76 (Inc. VAT)

£0.63 (Ex. VAT)

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1/2" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread - UNF (Unified National Fine) ABCDE 1/2" 1 3/4" 3/4" 5/16" 20 1/2" 4 1/2" 3/4" 5/16" 20 1/2" 7/8" 3/4" 5/16" 20 1/2" 1" 3/4" 5/16" 20 Please Note: Specifications given...

£2.06 (Inc. VAT)

£1.72 (Ex. VAT)

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1/2" UNF Zinc Plated Steel Hex Head Set Screw Fully Threaded Bolts

Material: Zinc Plated Steel Grade - 8.8 Grade 5 High Tensile Thread - UNF (Unified National Fine) ABCDE 1/2" 1 1/2" 3/4" 5/16" 20 1/2" 1...

£0.95 (Inc. VAT)

£0.79 (Ex. VAT)

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9/16" UNF A2 Grade Stainless Hexagon Head Bolts With Shank

Material: A2 Grade Stainless Steel Thread: UNF (Unified National Fine) (AF) Head Style: Hex Type: Part-Threaded Bolt Specifications: ABCDEFG 9/16" 2 1/2" 1 1/2" 13/16" 1/3" 18 1" 9/16" 2 3/4" 1...

£4.48 (Inc. VAT)

£3.73 (Ex. VAT)

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7/16" UNF Grade 8 Yellow Zinc Part Threaded Hex Bolts

Material: High Tensile Grade 8 Yellow Zinc Thread: UNF (Unified National Fine) Type: Hexagon Bolts 7/16" - 20 TPI

£2.47 (Inc. VAT)

£2.06 (Ex. VAT)

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9/16" UNF A2 Grade Stainless Steel Hex Head Set Screw Fully Threaded Bolts

Material: A2 Stainless Steel Thread: UNF (Unified National Fine) (AF) ABCDE 9/16" 1" 13/16" 1/3" 18 9/16" 1 3/4" 13/16" 1/3" 18 9/16" 2" 13/16" 1/3" 18 Please Note: Specifications given are intended as a guide...

£1.64 (Inc. VAT)

£1.37 (Ex. VAT)

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