1/2"-20 Grade 8 Hex Prevailing Torque Top Lock Nuts Zinc

Product Description

Part Number: 50FPTNCZ
Diameter/Pitch: 1/2"-20
Grade: Grade 8
Finish: Zinc Clear
Thread Series: Fine (UNF)
Wrench Size: 3/4"

BoltsandNuts.com

1/2"-20 Grade 8 Hex Prevailing Torque Top Lock Nuts Zinc

SKU: 50FPTNCZ

Product Description

Part Number: 50FPTNCZ
Diameter/Pitch: 1/2"-20
Grade: Grade 8
Finish: Zinc Clear
Thread Series: Fine (UNF)
Wrench Size: 3/4"

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1

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50

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100

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250

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Best Value

750

$0.23/pc

$0.60

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Thread Size	1/2"-20
Finish	Zinc Clear
Thread Series	Fine (UNF)
Proof Load (min)	23,990 lbf
Locking Type	All-metal prevailing torque (distorted thread)
Max Temperature	Rated to 450°F (all-metal)

Grade	Grade 8
Head Type	Hex
Head Marking	J995 Grade 8 marking
Specifications Met	IFI-100/107
Prevailing Torque	65 in-lb max (first installation)

Material	Medium carbon steel, heat treated
Wrench Size	3/4"
Thread Class	2B
Lock Type	Top Lock Nuts
Break Away Torque	12 in-lb min (fifth removal)

Technical Drawing

Not to scale · IFI-100/107 · See table for exact dimensions

Technical Dimensions

Width Across Flats	0.750" (3/4")
Thread Size	1/2"-20
Width Across Corners	0.866" max
Thread Class	2B
Proof Load	23,990 lbf
Prevailing Torque	65 in-lb max (first installation)
Break-Away Torque	12 in-lb min (fifth removal)
Locking Type	All-metal prevailing torque (distorted thread)
Max Temperature	Rated to 450°F (all-metal)
Material	Medium carbon steel, heat treated

All-metal prevailing torque nut with a distorted top thread that grips the bolt, resisting vibration loosening without a nylon insert. Suitable for elevated temperatures where nylon would fail.

Dimensions conform to IFI-100/107 and may vary within specified manufacturing tolerances.