Is the 1 3/8” an inside or outside measure for the width for u bolt N222-448?

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National Hardware N222-448 2193BC U Bolt in Stainless Steel

National Hardware N222-448 2193BC U Bolt in Stainless Steel

Product ID: 129774503

Details

Exterior Finish
Zinc
Head Style
Cupped
Manufacturer Grade
Grade 8
Material
Alloy Steel
Thread Size
1/2"-13

🌊Marine-grade rustproof durability

🔩300 series stainless steel corrosion resistance

⚙️Grade 8 alloy steel strength

R399

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Description

🔩 Lock in strength and style with rustproof confidence!

VERSATILE APPLICATION - Ideal for automotive, plumbing, marine, and industrial projects—engineered to withstand harsh environments and heavy-duty use.
COMPLETE FASTENING KIT - Includes stainless steel plate and nuts for a ready-to-install, no-fuss solution that fits standard 1/2"-13 UNC threads.
INDUSTRIAL GRADE STRENGTH - Grade 8 alloy steel construction ensures maximum shear strength (~275 MPa) to securely fasten pipes, wood, and more with confidence.
PRECISION AMERICAN THREADING - Designed with UNC/UNF threading (not metric) for seamless compatibility with US hardware standards—no adapters needed.
UNMATCHED CORROSION RESISTANCE - Crafted from premium 300 series stainless steel with 18% chromium for ultimate rustproof performance—perfect for marine and outdoor use.

The National Hardware N222-448 U Bolt is a premium-grade fastening solution made from 300 series stainless steel with 18% chromium, delivering superior corrosion resistance and durability. Engineered with Grade 8 alloy steel for high shear strength, it includes a stainless steel plate and nuts, designed for versatile use in automotive, marine, plumbing, and industrial applications. Featuring American-standard UNC threading, this U bolt guarantees a secure, rust-free hold that lasts, even in the harshest outdoor conditions.

Specifications

ASIN	B000BQ7ZYC
Best Sellers Rank	#125,096 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #93 in U-Bolts
Brand	National Hardware
Color	Stainless Steel
Compatible Groove Diameter	4.5 inches
Customer Reviews	4.4 4.4 out of 5 stars (220)
Exterior Finish	Zinc
Fastener Type	U-Bolt
Finish Types	Stainless Steel
Global Trade Identification Number	00038613191419
Grade Rating	Grade 2
Head Type	Flange
Included Components	BOLT U 5/16"X1.38X2.5 SS
Item Dimensions	4.46 x 3.23 x 1.68 inches
Item Hardness	Grade 2
Item Type Name	Stanley National Hardware N222-448 2193BC U Bolt in Stainless Steel, 5/16" x 1-3/8" x 2-1/2"
Item Weight	8.53 g
Manufacturer	National Hardware
Manufacturer Grade	Grade 8
Material Type	Alloy Steel
Maximum Shear Strength	Approximately 275 MPa
Metal Type	Stainless Steel
Model	N222-448
Number Of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	222448
Screw Head Style	Cupped
Set Screw Thread Type	UNC or UNF
Size Name	#512-5/16"x1-3/8"x2-1/2"
Thread Coverage	Fully Threaded
Thread Size	1/2"-13
Thread Style	Left Hand
Thread Type	Unc
UPC	038613191419
Unit Count	1 Count
Warranty Description	Warranty

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TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

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R399

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ayesha M.

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

5 days ago

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