Thumb Nut, 5/16-18, Gr 18-8, SS, Passvtd, PK5

CONTRACTOR SELECT — Thumb Nuts — Thumb Nut, 5/16-18, Gr 18-8, SS, Passvtd, PK5

A practical Thumb Nuts by CONTRACTOR SELECT intended for repeatable results in shop, facility, and field workflows.

Quick specs

• Material: Stainless Steel
• Finish: Plain
• System of Measurement: Inch
• Overall Height: 13/32 in
• Manufacturer Part Number: RTN20
• UPC: -

Product information

• Country of Origin: United States
• Manufacturer Part Number: RTN20
• UPC: -

Dimensions

• Overall Height: 13/32 in
• Head Diameter: 5/8 in
• Dia./Thread Size: 5/16"-18
• Fastener Thread Length: 0.406 in
• Base Dia.: 17/32 in
• Base Height: 7/32 in
• Nut Height: 13/32 in
• Head Height: 3/16 in
• Head Dia.: 5/8 in
• Thread Length: 13/32 in
• Base Diameter: 17/32 in
• Thread Size: 5/16"-18

Details

• Material Quality Standards: ASTM 581/582
• Thread Type: Coarse
• Pack Size: Small Pack
• Surface Texture: Knurled
• Material: Stainless Steel
• Type: Thumb Nut
• Thread Direction: Right Hand
• Material Grade/Class: 18-8
• Finish: Plain
• Head Shape: Round
• Item: Thumb Nut
• System of Measurement: Inch
• Nut Style: Round Knurled Thumb Nut
• Basic Material: Stainless Steel
• Material Grade: 18-8
• Fastener Finish: Passivated
• Fastener Thread Type: UNC (Coarse)
• Nut Standards: ASTM 581/582
• Fastener Thread Direction: Right Hand

This Thumb Nuts is well-suited for replacement, upgrade, and stock-room use.

Recommended for maintenance and repair workflows and designed to support reliable operation in demanding environments.

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: Review application constraints and installation requirements to ensure the part meets your needs.