Stainless Steel Tamper-Resistant Button Head Torx Screws

1/4"-20 Thread Size, 3/4" Long

Technical Drawing of Stainless Steel Tamper-Resistant Button Head Torx Screws, 1/4"-20 Thread Size, 3/4" Long.

Image of Product. Back orientation. Stainless Steel Tamper-Resistant Button Head Torx Screws, 1/4"-20 Thread Size, 3/4" Long.

Image of Product. Side1 orientation. Contains SizingReference. Stainless Steel Tamper-Resistant Button Head Torx Screws, 1/4"-20 Thread Size, 3/4" Long.

2-D PDF

00000 per pack of 10

91900A540

In stock

91900A540

00000 per pack of 10

QuantityPack of 10

In stock

Select a compatible file type: Parasolid

Solidworks 2022 and Parasolid files now available

Solidworks 2022, PDF, and DWG files now available

Parasolid files now available

Streamline your design process with our Solidworks Add-In

Available for Solidworks 2017 or newer.

Thread
Size	1/4"-20
Direction	Right Hand
Spacing	Coarse
Type	UNC
Fit	Unified Standard Class 3A
Tip Type	Flat
Fastener Head Type	Rounded
Head
Style	Button
Profile	Standard
Height	0.132"
Diameter	0.437"
Drive
Style	Tamper-Resistant Torx
Size	T27
Length	3/4"
Threading	Fully Threaded
Tensile Strength	70,000 psi
Specifications Met	ASME B18.3
Certificate Form	Digital
Certificate Type	Material Certificate with Traceable Lot Number
Hardness	Rockwell B70
Material	18-8 Stainless Steel
Passivation	Passivated
Performance	Corrosion Resistant, Tamper Resistant
Screw Size Decimal Equivalent	0.250"
System of Measurement	Inch
Country of Origin	United States
DFARS Compliance	Not Specialty Metals Compliant
Export Control Classification Number (ECCN)	EAR99
REACH Compliance	REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant
RoHS Compliance	RoHS 3 (2015/863/EU) Compliant
Schedule B Number	731815.9000
U.S.–Mexico–Canada Agreement (USMCA) Qualifying	Yes
Related Products	L-Keys
	Power Tool Bits

Deter unauthorized access in corrosive environments. With a security pin in the drive, you can only turn them with a tamper-resistant Torx driver. Also known as pin-in Torx, the drive has a deep six-lobe opening that withstands high torque without the driver slipping and stripping the drive. Made of stainless steel, these screws won't rust, but they're not as strong as alloy steel. The button head looks similar to a pan head, but it's lower and more compact, taking up less space.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.

L-Keys—Turn screws by hand for more control and less chance of overtightening compared to power tools.

Power Tool Bits—Pair these bits with your power tools to turn screws more quickly than manual tools.

Compatible Products for This Rounded Head Screw