Are these threaded all the way through, such that a bolt can completely pass through (ie, in one end and out the other)?

The thread does not go all the way through. Whatever you are trying to compress must reach its limit within the length of the thread.

What size connector bolt do I buy for this?

This is what I used. 2 of Hard-to-Find Fastener 014973445713 Joint Connector Bolt (10 Piece), 1/4-20 x 1.18", Black

What is the diameter of the the head: 13 or 17mm?

The diameter of the head is 17mm.

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Joint Connector Nuts, 1/4-20 x 1/2in, 12 Pack, Black

Product ID: 59539667

Details

Material
Steel
Fastener Type
Twist-On
Thread Size
1/4"-20
Exterior Finish
Black Oxide
Color
Black Oxide

🔩1/4"-20 thread

🖤Sleek black oxide finish

⚙️High-strength steel

₨9404

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Description

🔧 Elevate your projects with style and strength!

SLEEK AESTHETIC - The black oxide finish adds a modern touch to any project.
ROBUST CONSTRUCTION - Crafted from high-strength alloy steel for durability.
CONVENIENT ASSORTMENT - Includes 12 pieces for all your connecting needs.
PRECISION ENGINEERING - 1/4"-20 coarse thread ensures a secure fit.
VERSATILE APPLICATIONS - Perfect for furniture and cabinetry projects.

The Black Oxide Joint Connector Nut (1/4"-20) is designed for furniture and cabinetry applications, featuring a robust high-strength steel construction and a sleek black oxide finish. With a versatile range of lengths from 1/2" to 2-3/4", this connector nut ensures a secure fit and modern aesthetic for all your DIY projects.

Specifications

ASIN	B00MN6EI48
Best Sellers Rank	#84,703 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #174 in Hex Nuts
Brand	Hillman
Color	Black Oxide
Compatible Groove Diameter	0.25 inches
Customer Reviews	4.6 out of 5 stars 165 Reviews
Drive Style	Hex Socket
Exterior Finish	Black Oxide
Fastener Type	Twist-On
Finish Types	Black Oxide
Global Trade Identification Number	00008236387995
Grade Rating	industrial
Included Components	Connectors
Inside Thread Size	#0.248
Item Diameter	0.25 inches
Item Dimensions	2.5 x 1.4 x 1.5 inches
Item Highlight	Black oxide steel, hex socket drive for furniture and cabinetry assembly, fits 1/4-20 coarse thread fasteners
Item Type Name	Black Oxide Joint Connector Nut
Item Weight	3.2 ounces
Manufacturer	The Hillman Group
Material	Alloy Steel
Material Type	Alloy Steel
Metal Type	Alloy Steel
Model	57148
Number Of Items	12
Number of Packs	1
Number of Pieces	12
Outside Diameter	0.25 inches
Part Number	57148
Screw Head Style	Flat
Set Name	Hillman Black Oxide Joint Connector Nut Set (12 Pcs, 1/4"-20 x 1/2")
Size Name	1/4"-20
Thread Class	Class 2A
Thread Coverage	Partially Threaded
Thread Size	1/4"-20
Thread Style	Right Hand
Thread Type	Unified National Coarse
UPC	008236387995
Unit Count	12 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₨9404

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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