Which is the dimensions of the hexagonal head bolts and washers? I had other t-track measures and I like to confirm them all...

Bolt head across the flats 7/16” or .440 Washer outside 5/8” or .629 inside 1/4” or .258 Bolts are standard 1/4 x20x1-1/2”

Are these actually thru holes or are they threaded for 1/4-20

These are actually 1/4" x 20 threaded through holes. I would say these were a good buy for what I paid. You get 10 of each threaded knobs, washers, and threaded screws.

What material are the washers? Are they concave?

Don't know what material, but the washers are flat - not concave.

How long is the thread area

The actual threaded shank is 1” not counting the knob. Hope this helps.

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POWERTEC 71068 T Track Knob Kit with 1/4-20 by 1-1/2" Hex Bolts and Washers, Set of 10 T Track Bolts, T Track Accessories for Woodworking Jigs and Fixtures

POWERTEC 71068 T Track Knob Kit with 1/4-20 by 1-1/2" Hex Bolts and Washers, Set of 10 T Track Bolts, T Track Accessories for Woodworking Jigs and Fixtures

Product ID: 40618470

Details

Brand
POWERTEC
Color
black silver
Item dimensions L x W x H
8 x 4 x 2
Material
Other
Size
1/4"-20 Knob

🔩10-piece precision set

⚙️¼”-20 standard hex bolts

🛠️Matte black thermoplastic grip

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Description

🔧 Secure your craft with style — the ultimate T-Track upgrade!

HEAVY DUTY STEEL THREADS - Durable 1/4 x 20 TPI bolts ensure secure, long-lasting hold in any workshop setup.
UNIVERSAL 20 HEX BOLTS - Fits both mini and universal T-tracks for maximum versatility across projects.
COMPLETE 10 PIECE T TRACK KIT - Everything you need to upgrade your woodworking jigs and fixtures in one sleek set.
ERGONOMIC TRIPLE POINT KNOB DESIGN - Comfortable grip with a matte black finish that blends style with function.
EFFORTLESS INSTALLATION REPLACEMENT - Quickly swap or install knobs to keep your workflow smooth and efficient.

The POWERTEC 71068 T Track Knob Kit includes 10 high-quality knobs, washers, and ¼”-20 hex bolts designed for woodworking jigs and fixtures. Featuring a durable matte black thermoplastic grip and heavy-duty steel threads, this kit fits both mini and universal T-tracks, making it an essential, easy-to-install accessory for any professional or hobbyist woodworker aiming to enhance precision and efficiency.

Specifications

ASIN	B01N5WC8BK
Assembled Diameter	0.44 inches
Best Sellers Rank	#21,288 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Power Tool Accessory Jigs
Color	Black, Silver
Customer Reviews	4.6 4.6 out of 5 stars (4,861)
Cutting Diameter	0.44 inches
Date First Available	February 3, 2017
Finish	Matte
Handle Material	Alloy Steel
Head Style	Hex
Included Components	T-Track Knobs
Item Package Quantity	1
Item Weight	9 ounces
Item model number	71068
Manufacturer	POWERTEC
Material	Other
Measurement System	English/Standard
Number Of Pieces	10
Part Number	71068
Pattern	T-Track
Shape	Round
Size	1/4"-20 Knob Kits, Set of 10
Special Features	Easy to Install, Sturdy
Style	T track knob kits

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3399 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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