Spiral Point Tap 1/4 -28 HSS MPN:918937

UN fine (UNF) taps have more threads per inch than UN coarse (UNC) taps. Compared to UNC taps, UNF taps perform better in threading applications on thin-walled workpieces and hard materials. Fine threads provide more tensile strength and shear strength than coarse threads. The bright finish on these taps provides a smooth, polished surface.

Technical Specifications

• Item Spiral Point Tap
• Thread Size 1/4"-28
• Thread Standard UNF
• Tap Material High Speed Steel
• Tap Finish Bright (Uncoated)
• Thread Length 1 in
• Overall Length 6 in
• 75% Thread Drill Size 5.45 mm
• Thread Limit H3
• Class of Fit 2B
• Thread Direction Right Hand
• Number of Flutes 2
• Primary Material Application All Materials
• 55% Thread Drill Size 5.70 mm
• 65% Thread Drill Size 7/32 in
• Drill Bit Size #3
• Extended Neck Yes
• Measurement System Fractional Inch
• Primary Material Application ISO Code K, N, P
• Series SPGPX
• Shank Dia. 1/8 in
• Shank Length 5 in
• Shank Type - Machining Straight
• Spiral Direction Neutral
• Square Size 0.1910 in
• Standards USCTI TABLE 303A
• Tap Chamfer Plug
• Tap Grouping Individual
• Tap Thread Size 1/4"-28
• Threads per Inch 28
• Thread Limit / Class of Fit H3 / 2B

Manufacturer Details

• Manufacturer: Greenfield Threading
• Condensed Mfg Number: 918937
• MPN: 918937

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: US
• CA Prop 65 Wht Label: N

Classification Details

• Harmonization Code: 8207400000
• GDS Category Name: Spiral Point Taps
• GDS Family Name: Threading
• GDS Segment Name: Machining
• UNSPSC: 27112806
• UNSPSC Class ID: 28
• UNSPSC Commodity Name: Tool attachments and accessories
• UNSPSC Commodity ID: 06
• UNSPSC Commodity Name: Threading taps
• UNSPSC Family ID: 11
• UNSPSC Family Name: Hand tools
• UNSPSC Segment ID: 27
• UNSPSC Segment Name: Tools and General Machinery

Shipping Details

• Not For Sale In: HI AK PR