Top 9 5/16-18 Thumb Screw – Thumb Screws

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1. Small Parts

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Knurled Head, Plain Finish, Oversized Head, 3/4" Length, 300 Series Stainless Steel Thumb Screw, 5/16"-18 UNC Threads, Fully Threaded, Made in US

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Small Parts #ad - Stainless steel 300 for corrosion resistance. Extra large head with straight knurl provides additional grip for manual adjusting. One-piece construction for strength. Panel screw for easy attachment to panel assemblies, staying in place even when not tightened.
BrandSmall Parts #ad
ManufacturerMorton Machine Works #ad
Height0 Inches
Length0.75 Inches
Width0 Inches
Part NumberB005RTFGK8
ModelPS-30SS

2. Magic Hub

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SS Thumb Screw Black Thumbscrews Knurled Knob Screw Thumbscrew 4, 5/16" x 1", Black Thumb Screws with Rosette Fluted Head, Knurled Thumb Screw, 5/16" x 1" Clamping Knobs

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Magic Hub #ad - The round fluted head is anti-corrosion and anti-aging, can be used for many years. Package content: 4 x Knurled Thread Clamping Knob. Easy to install and remove without any other tools, can be used repeatedly. Thread material – Stainless Steel - anti-corrosion and anti-rust. 5/16-18" coarse thread x 1” thumb Screws with Fluted Rosette Plastic Head.
BrandMagic Hub #ad
ManufacturerImported #ad
Part Number5/16

3. Magic Hub

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5/16"-18 x 3/4" Thumb Screws with Wing Knob, Black Thumbscrews Thumb Screw Butterfly Thumb Screws Thumbscrew Black Tee Knob 3

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Magic Hub #ad - 5/16"-18 x 3/4" thumbscrew grip knobs thumb screw Tee Wing - Hurricane Style Knobs - Heavy Duty Wing Tee Knobs. Easy to install and remove without any other tools, can be used repeatedly. Package content: 3 x Thumb Screws with Wing Knob. Thread material – Stainless Steel - anti-corrosion and anti-rust. T type head is made of durable Acetal Resin, anti-corrosion and anti-aging, can be used for many years. Offset Lobes for ease of use.
BrandMagic Hub #ad
ManufacturerImported #ad
Part Number5/16"

4. Cartener

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5/16"-18" Thumb Screws with Wing Knob Pack of 3 Red

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Cartener #ad - Color: Red. The head is made of nylon and 1 1/2" width X 7/16" height. Thread material – 8-18 Stainless Steel. Head thickness: 7/16. Fully threaded to within 1/8” of cap.
BrandCartener #ad
ManufacturerCartener #ad

5. GRAINGER APPROVED

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Thumb Screw, 5/16-18, SPD, PK10, 1 1/2

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GRAINGER APPROVED #ad - Range f: - item: thumb screw, type S Finish: Zinc Plated Head Width: 067 to 070" head height: 075 to 078". Price for: each head dia. Shoulder length: - tensile strength: - driver size: - drive type: - meets/exceeds: - head thickness: - tip type: - class: - tip Material: - System of Measurement: Inch Head Type: Spade Temp. Shoulder dia. 056" to 059" head material: steel, zinc rockwell hardness: brinell Min 137 Thread Size: 5/16-18 Material: Steel Length: 1-1/2" Country of Origin subject to change: Multiple.
BrandGRAINGER APPROVED #ad
ManufacturerGRAINGER APPROVED #ad
Weight0.02 Pounds
Part NumberTSI0310150S0-010P

6. Taytools

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10 Pack 5/16-18 x 1-1/2 Inch Threads Solid Brass Diamond Knurled Thumb Screws with Straight Shoulders Right-Hand Threads SAE Flat Tip Uncoated 5/16-18 x 1-1/2 inch Long Threads

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Taytools #ad - Made from solid brass which is a corrosion-resistant alloy. 10 pack/pieces knurled head solid brass thumb screws with straight shoulders and flat tips.

Knurled head screws are common in applications requiring frequent fastening and unfastening. The knurled surface on these thumb screws provides optimal gripping allowing the screw to be tightened and loosened by hand pressure alone eliminating the need for tools. Available in the following sae thread sizes: 6-32, 1/4-20, 8-32, 10-32, 5/16-18 and 3/8-16. Specifications: 5/16-18 threads, shoulder height:. 1875 inches, shoulder diameter:. 645 inches, Head diameter:. 750 inches, Head height:. 3125 inches, thread length: 1-500 inches.
BrandTaytools #ad
ManufacturerTaylor Toolworks #ad
Part Number467467

7. Small Parts

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Dog Point, Plain Finish, 1-1/2" Length, Made in US, Fully Threaded, 5/16"-18 UNC Threads, Knurled Head, 300 Series Stainless Steel Thumb Screw

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Small Parts #ad - Carbon steel offers strength. Large head with straight knurl provides easy grip for hand tightening. Adjusting screw for when frequent adjustments are required, with straight point at screw’s end to make initial contact easier and reduce thread stripping. Stainless steel 300 for corrosion resistance.
BrandSmall Parts #ad
ManufacturerMorton Machine Works #ad
Height0 Inches
Length1.5 Inches
Width0 Inches
Part NumberB005RTFTPK
ModelKHS2-1SS

8. TE-CO

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Knurled Head, 5/16"-18 Threads, Black Oxide Finish, Made in US Pack of 2, Steel Thumb Screw, 1-1/2" Length, Partially Threaded, Dog Point

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TE-CO #ad - Dog point prevents damage to end threads. Package dimensions: 8" L x 1" W x 10" H. Black oxide finish for excellent resistance to corrosion. Material is 12L14 steel.
BrandTE-CO #ad
ManufacturerTE-CO #ad
Height0 Inches
Length1.5 Inches
Weight0.1 Pounds
Width0 Inches
Part Number43808
Model43808

9. GRAINGER APPROVED

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Thumb Screw, 5/16-18, 1 L, Spade

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GRAINGER APPROVED #ad - Thread size: 5/16-18 material: 18-8 stainless steel length: 1" finish: Plain Head Width: 11/16" Head Height: 3/4" Country of Origin subject to change: Multiple. Price for: each head dia. Shoulder length: - tensile strength: - driver size: - drive type: - meets/exceeds: - head thickness: - tip type: - class: - tip Material: - System of Measurement: Inch Head Type: Spade Temp. Range f: - item: thumb Screw, Type S Shoulder Dia. 0582" head material: 18-8 stainless Steel Rockwell Hardness: RC 80-90B.
BrandGRAINGER APPROVED #ad
ManufacturerGRAINGER APPROVED #ad
Part NumberTSIX0310100S-001P