Thumb Screw, 5/16"-18 Thread Size, Round, Black Oxide Steel, 1/4 in Head Ht, 1 3/4 in Lg

CONTRACTOR SELECT — Thumb Screws — Thumb Screw, 5/16"-18 Thread Size, Round, Black Oxide Steel, 1/4 in Head Ht, 1 3/4 in Lg

Designed for professional use, this CONTRACTOR SELECT Thumb Screws helps keep parts and tooling consistent across routine service tasks.

Quick specs

• Material: Steel
• Finish: Black Oxide
• System of Measurement: Inch
• Overall Length: 1 3/4 in
• Manufacturer Part Number: Z1071
• UPC: -

Product information

• Country of Origin: United States
• Manufacturer Part Number: Z1071
• UPC: -

Dimensions

• Maximum Head Width: 1 1/4 in
• Thread Size: 5/16"-18
• Fastener Length: 1 3/4 in
• Head Height: 1/4 in
• Head Thickness: 1.25 in
• Shoulder Length: 1/2 in
• Head Dia.: 1 1/4 in
• Head Width: 1.25 in
• Overall Length: 1 3/4 in
• Maximum Head Height: 1/4 in
• Shoulder Diameter: 5/8 in
• Screw Size: 5/16"

Details

• Head Texture: Knurled
• Thread Type: Coarse
• Head Shape: Round
• Material: Steel
• Finish: Black Oxide
• Head Material: Steel
• Thread Style: Fully Threaded
• Tensile Strength: 57,000
• Item: Thumb Screw
• Rockwell Hardness: B68 to B71
• System of Measurement: Inch
• Class: 2A
• Head Type: Knurled
• Tip Material: Steel
• Features: Straight Knurl
• Made in North America: Made in North America
• For Use in Systems: Jig and Fixture Component
• Includes Nut: Nut Not Included
• Thread Fit: 2A
• Head Style: Flat
• Type: Thumb Screw
• Pack Size: Small
• Grip Style: Knurled
• Drive: No Drive

This Thumb Screws is intended for professional buyers focused on durability and uptime.

Recommended for planned maintenance programs and well-suited for replacement, upgrade, and stock-room use.

Highlights

• Helps keep specifications consistent across replacements and replenishment cycles.
• Designed for professional use where predictable fit and handling are important.
• Works well in standardized part lists and preventative maintenance schedules.
• Clear specification formatting helps reduce ordering mistakes.

Notes: Verify measurement standards, tolerances, and compatibility with existing assemblies before purchase.