Extension Tap 1/4 -20 HSS-E MPN:1767901

The black-oxide finish on these taps retains lubricants to improve the taps' wear resistance and chip flow. Black-oxide taps should only be used on ferrous metals. High-performance taps are harder and more wear-resistant than high-speed steel taps. They provide good precision and accuracy in threading tasks. Spiral-flute taps pull chips out and away from the hole as the tap moves into the hole to create threads, which helps prevent chips from packing in the hole. They are used for threading blind holes.

Technical Specifications

• Item Extension Tap
• Thread Size 1/4"-20
• Thread Standard UNC
• Tap Finish Black Oxide
• Overall Length 4 in
• Thread Length 25/64 in
• 75% Thread Drill Size #7
• Thread Limit H3
• Thread Direction Right Hand
• Number of Flutes 3
• 55% Thread Drill Size #3
• 65% Thread Drill Size #5
• Coolant Fed Non-Coolant Through
• Extended Neck Yes
• Extended Shank Yes
• Material Grade - Machining Vanadium High Speed Steel
• Measurement System Fractional Inch
• Primary Material Application Stainless Steel, Steel
• Primary Material Application ISO Code M, P
• Series 398
• Shank Dia. 1/4 in
• Shank Length 2 1/2 in
• Square Size 0.1910 in
• Standards ANSI
• Tap Chamfer Modified Bottom
• Tap Grouping Individual
• Tap Length Standard ANSI
• Tap Material HSS-E
• Tap Shank Standard ANSI
• Tap Style Spiral Flute
• Tap Thread Size 1/4"-20
• Tap Type Spiral Flute
• Threads per Inch 20 TPI

Manufacturer Details

• Manufacturer: Osg
• Condensed Mfg Number: 1767901
• MPN: 1767901

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: BR
• CA Prop 65 Wht Label: Y
• CA Prop 65 Warning Msg Scenario: 7

Classification Details

• Harmonization Code: 8207406000
• GDS Category Name: Extension Taps
• GDS Family Name: Threading
• GDS Segment Name: Machining
• UNSPSC: 23153305
• UNSPSC Class ID: 33
• UNSPSC Commodity Name: Cutting tools
• UNSPSC Commodity ID: 05
• UNSPSC Commodity Name: Taps or dies
• UNSPSC Family ID: 15
• UNSPSC Family Name: Industrial process machinery and equipment and supplies
• UNSPSC Segment ID: 23
• UNSPSC Segment Name: Industrial Manufacturing and Processing Machinery and Accessories

Shipping Details

• Not For Sale In: HI AK PR