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Washers 5/16 X 1-1/4 Fender St-zn (Jar 100)
Special Features
- Features: A Larger Diameter for Greater Bearing Surface
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Country Of Origin:
- MUL
- Division:
- Electrical H1
- Field Application:
- Electrical, Plumbing, Heating and Air Conditioning Industries
- Inside Diameter:
- 16-May IN
- Outside Diameter:
- 1/1/2004 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Fender Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Finish:
- Zinc Chromate
- Product Length:
- 3 in
- Product Height:
- 3.6 in
- Product Material:
- Steel Zinc
- Product Weight:
- 2.3 lbs
- Product Width:
- 3 in
Metallics JW115 – Frequently Asked Questions
1) When should I use a fender washer instead of a standard flat washer?
Use a fender washer like the JW115 when the material under the fastener is soft, thin, or oversized at the hole: sheet metal, drywall, strut channel with a sloppy opening, plywood, or a worn-out hole you are not going to re-drill. The 1-1/4 inch outside diameter on a 5/16 inch bore spreads the clamp load over a much wider area so the head does not pull through. A standard 5/16 flat washer is the right call when you just need to protect the surface under a bolt head in solid material.
2) Are these zinc fender washers okay for damp or outdoor use?
The JW115 is steel with a zinc chromate finish, which handles indoor, damp, and sheltered outdoor conditions. It is not stainless. For direct weather exposure, coastal air, pressure-treated lumber, or chemical exposure, go to a stainless or hot-dip galvanized fender washer instead, since zinc plating will eventually give up in those conditions.
3) Can I use the JW115 with 5/16 inch threaded rod hangers?
Yes, the 5/16 inch bore clears 5/16-18 rod. Pair it with a 5/16 inch hex nut and the 1-1/4 inch outside diameter gives the nut enough bearing surface to sit on a channel slot, a strap, or a punched angle without dishing it. Nuts and rod are separate items, the jar is washers only.
4) What trades actually use the Metallics JW115 fender washer?
Metallics builds the JW115 for the electrical, plumbing, and HVAC trades. Typical uses are mounting panels and enclosures to sheet metal or block, anchoring strut and pipe hangers where the slot is wider than the bolt, and backing up 5/16 inch rod hangers for ductwork and conduit runs. MRO and facility crews keep the jar on the shelf for the same reason: one washer size covers most 5/16 inch hanging and mounting work.
How fast can I get the Metallics JW115 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics JW115 come with a warranty?
Absolutely. The Metallics JW115 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics JW115?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Metallics JW115 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.