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Red Head Trubolt 316 Stainless Steel Concrete Wedge Anchor
The Red Head Trubolt 316 Stainless Steel Wedge Anchor is a heavy-duty mechanical expansion anchor engineered for dependable, long-term fastening into solid concrete. Constructed entirely from 316 stainless steel, this wedge anchor offers outstanding resistance to rust, corrosion, and chemical exposure, making it well suited for demanding indoor and outdoor environments. As part of the trusted Red Head Trubolt line, this anchor delivers consistent expansion and holding performance for structural, mechanical, and equipment-mounting applications where ordinary carbon steel or zinc-plated anchors would fall short over time. Each Trubolt 316 Stainless Steel Wedge Anchor is sold by the box, with box quantity shown for each available size, simplifying bulk ordering for contractors, distributors, and facility maintenance teams working on demanding commercial and industrial projects.
Key Features
- 316 Stainless Steel Construction: Offers superior resistance to rust, corrosion, and chemical attack compared to standard carbon steel or zinc-plated anchors.
- Wedge Anchor Expansion Design: Mechanical wedge-style expansion anchor delivers strong, reliable holding power when set into solid concrete base material.
- Red Head Trubolt Series: Part of the established Trubolt wedge anchor line, trusted by professional contractors for dependable concrete fastening performance.
- Corrosion-Resistant Performance: Well suited for wet, humid, coastal, or chemically exposed environments where standard fasteners would deteriorate over time.
- Solid Concrete Anchoring: Designed specifically for expansion anchoring into solid concrete base material for structural-grade holding strength.
- Sold By the Box: Packaged and sold by the box, with box quantity shown for each size, making bulk jobsite ordering straightforward.
- Domestic Manufacturing: Made in the USA using a combination of US and global materials for consistent quality control.
Technical Specifications
- Country of Origin: Made in USA with US and Global Materials
Typical Applications
- Concrete Anchoring for Structural and Mechanical Installations
- Outdoor, Coastal, and Corrosive Environment Fastening
- Mounting Electrical Enclosures, Racks, and Equipment to Concrete
- Commercial and Industrial Construction Projects
- Marine, Wastewater, and Chemical-Processing Facilities
- Renovation, Retrofit, and New Construction Anchoring
Why Red Head?
Red Head has built its reputation on dependable anchoring and fastening products for professional construction trades. The Trubolt 316 Stainless Steel Wedge Anchor combines corrosion-resistant 316 stainless steel construction with the proven wedge-anchor expansion design professionals rely on for secure concrete fastening in demanding environments. With convenient box-quantity packaging and USA-based manufacturing using a combination of US and global materials, Red Head delivers anchors built for dependable, consistent performance on commercial, industrial, and infrastructure projects where long-term corrosion resistance matters.
Specifications by Size
| Size | Part # | Pull-Out (lbs.)* | Shear (lbs.)* | Bit Size | Box Qty | Length ID Code | Max. Fixture Thickness | Max. Torque | Min. Edge Distance | Min. Embedment | Min. Fixture Hole Ø (Hole Spotted) | Min. Fixture Hole Ø (In Place) | Min. Spacing | Thread Length | Thread Type | Wrench Size | UPC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" x 2-1/4" (Box of 100) | SWW1422 | 1180 | 1400 | 1/4" | 100 | B | 1-1/8" | 4 ft./lbs. | 2" | 1-1/8" | 1/4" | 5/16" | 3-15/16" | 1-1/4" | 1/4" - 20 | 7/16" | 662520022551 |
| 1/4" x 3-1/4" (Box of 100) | SWW1432 | 1180 | 1400 | 1/4" | 100 | D | 2-1/8" | 4 ft./lbs. | 2" | 1-1/8" | 1/4" | 5/16" | 3-15/16" | 2-1/4" | 1/4" - 20 | 7/16" | 662520067569 |
| 3/8" x 3" (Box of 50) | SWW3830 | 1620 | 2320 | 3/8" | 50 | D | 1-1/2" | 25 ft./lbs. | 2-5/8" | 1-1/2" | 3/8" | 7/16" | 5-1/4" | 1-3/4" | 3/8" - 16 | 9/16" | 662520022674 |
| 3/8" x 3-3/4" (Box of 50) | SWW3836 | 1620 | 2320 | 3/8" | 50 | E | 2-1/4" | 25 ft./lbs. | 2-5/8" | 1-1/2" | 3/8" | 7/16" | 5-1/4" | 2-1/2" | 3/8" - 16 | 9/16" | 662520022704 |
| 3/8" x 5" (Box of 50) | SWW3850 | 1620 | 2320 | 3/8" | 50 | H | 3-1/2" | 25 ft./lbs. | 2-5/8" | 1-1/2" | 3/8" | 7/16" | 5-1/4" | 3-3/4" | 3/8" - 16 | 9/16" | 662520067590 |
| 1/2" x 3-3/4" (Box of 25) | SWW1236 | 3455 | 4760 | 1/2" | 25 | E | 1-1/2" | 55 ft./lbs. | 3-15/16" | 2-1/4" | 1/2" | 9/16" | 7-7/8" | 2-1/4" | 1/2" - 13 | 3/4" | 662520022438 |
| 1/2" x 4-1/4" (Box of 25) | SWW1242 | 3455 | 4760 | 1/2" | 25 | F | 2" | 55 ft./lbs. | 3-15/16" | 2-1/4" | 1/2" | 9/16" | 7-7/8" | 2-3/4" | 1/2" - 13 | 3/4" | 662520022469 |
| 1/2" x 5-1/2" (Box of 25) | SWW1254 | 3455 | 4760 | 1/2" | 25 | I | 3-1/4" | 55 ft./lbs. | 3-15/16" | 2-1/4" | 1/2" | 9/16" | 7-7/8" | 3" | 1/2" - 13 | 3/4" | 662520022490 |
| 5/8" x 5" (Box of 10) | SWW5850 | 5185 | 7120 | 5/8" | 10 | H | 2-1/4" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 3-1/4" | — | 15/16" | 662520022735 |
* Pull-out and shear values are average ultimate loads in 2000 PSI concrete, offered as a guide only and not guaranteed. A 4:1 safety factor (25% of ultimate) is generally accepted as a safe working load.
Manufacturer Resources
Product Specs
- Product Brand:
- Red Head
- Product Type:
- Wedge Anchor
- Country Of Origin:
- United States
- Department:
- Fasteners
- Product Group:
- Concrete Anchors
- Product Subgroup:
- Wedge Anchors
- Product Material:
- 316 Stainless Steel
- Location Rating:
- Submerged/Chemicals
- Base Material:
- Concrete
- Product Attribute:
- Male (threaded stud)
Red Head WAS-316585;R – Frequently Asked Questions
1) What size drill bit do I need for the Red Head Trubolt 316 stainless wedge anchors?
Bit size matches the anchor diameter on every size of the Trubolt 316 stainless wedge anchor: a 1/4 inch bit for the 1/4 inch anchors, 3/8 inch for the 3/8 inch, 1/2 inch for the 1/2 inch, and 5/8 inch for the 5/8 inch. Drill with a carbide hammer bit of that nominal size into solid concrete, then drive the anchor through the fixture hole.
2) How deep does a Trubolt 316 stainless wedge anchor have to be embedded in concrete?
Minimum embedment runs by diameter: 1-1/8 inches for the 1/4 inch anchors, 1-1/2 inches for the 3/8 inch sizes, 2-1/4 inches for the 1/2 inch sizes, and 2-3/4 inches for the 5/8 inch x 5 inch. Pick the anchor length by adding your fixture thickness to that embedment, and confirm your slab is thick enough to take the hole.
3) How thick a fixture can I bolt down with each size of this Red Head stainless wedge anchor?
Max fixture thickness is what sets the length you need. 1/4 x 2-1/4 takes 1-1/8 in., 1/4 x 3-1/4 takes 2-1/8 in. 3/8 x 3 takes 1-1/2 in., 3/8 x 3-3/4 takes 2-1/4 in., 3/8 x 5 takes 3-1/2 in. 1/2 x 3-3/4 takes 1-1/2 in., 1/2 x 4-1/4 takes 2 in., 1/2 x 5-1/2 takes 3-1/4 in. The 5/8 x 5 takes 2-1/4 in. If your base plate is thicker than the figure listed, step up to the next length.
4) Will 316 stainless wedge anchors hold up in a coastal or wastewater plant?
That is what they are for. The Trubolt wedge anchor is 316 stainless steel throughout, and it is rated for submerged and chemical-exposure locations, which covers marine, wastewater, and chemical-processing work where zinc-plated carbon steel anchors rust out. For dry interior anchoring you do not need to pay for 316.
5) How much torque do I put on a Red Head Trubolt stainless wedge anchor nut?
Max installation torque is 4 ft-lbs on the 1/4 inch anchors, 25 ft-lbs on 3/8 inch, 55 ft-lbs on 1/2 inch, and 90 ft-lbs on the 5/8 inch. Use a torque wrench rather than an impact gun; overtorquing a stainless wedge anchor can gall the threads or strip the cone. Wrench size across the nut is 7/16 in. (1/4), 9/16 in. (3/8), 3/4 in. (1/2), and 15/16 in. (5/8).
6) How close to a slab edge and to each other can these wedge anchors be set?
Minimum edge distance is 2 in. for 1/4 inch anchors, 2-5/8 in. for 3/8 inch, 3-15/16 in. for 1/2 inch, and 4-13/16 in. for the 5/8 inch. Minimum anchor-to-anchor spacing is 3-15/16 in., 5-1/4 in., 7-7/8 in., and 9-5/8 in. respectively. Those two numbers usually decide your bolt pattern before the load values do, so lay out the base plate against them.
7) Can I use these Red Head wedge anchors in block, brick, or hollow-core plank?
No. The Trubolt wedge anchor is a mechanical expansion anchor for solid concrete only. In hollow block, brick, or hollow-core plank the cone has nothing to expand against, so you want a sleeve anchor, a toggle, or an adhesive anchor with a screen tube instead.
8) What hole size do I need in my base plate for a 1/2 inch Trubolt wedge anchor?
Two cases. Drilling through the fixture into the concrete (hole spotted), the fixture hole can be the anchor diameter: 1/4, 3/8, 1/2 or 5/8 in. Setting the anchor into an already drilled concrete hole and dropping the fixture over it (in place), you need clearance: 5/16 in. for 1/4, 7/16 in. for 3/8, 9/16 in. for 1/2, and 11/16 in. for 5/8.
9) What thread does the stud take, and are nuts and washers included?
The Trubolt 316 is a male anchor, a threaded stud with a nut and washer assembled on it. Threads are standard UNC: 1/4-20, 3/8-16, and 1/2-13, with thread lengths of 1-1/4 to 2-1/4 in. on the 1/4 inch sizes, 1-3/4 to 3-3/4 in. on the 3/8 inch, and 2-1/4 to 3 in. on the 1/2 inch. Any matching stainless nut will thread on if you need to add one.
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Does the Red Head WAS-316585;R come with a warranty?
Absolutely. The Red Head WAS-316585;R is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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