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Red Head Trubolt Series 304 Stainless Steel Wedge Anchor
The Red Head Trubolt Series 304 Stainless Steel Wedge Anchor is a mechanical expansion anchor engineered for dependable, long-term fastening performance in concrete and masonry substrates. Constructed from 304 stainless steel, this wedge anchor resists corrosion and is well suited for outdoor, wet, or otherwise demanding installation environments where standard carbon steel anchors may fail prematurely. Manufactured in the USA using a combination of US and global materials, the Trubolt wedge anchor is built to the quality standards professionals expect from the Red Head brand. This anchor is sold by the box, with the specific box quantity listed for each available size, allowing contractors and installers to order the exact quantity needed for a given job.
Key Features
- Premium 304 Stainless Steel Construction: Offers excellent resistance to rust and corrosion compared to standard carbon steel anchors, extending service life in harsh conditions.
- Trubolt Wedge Anchor Design: A mechanical expansion-style wedge anchor that expands against the walls of a pre-drilled hole to create a secure, high-strength hold.
- Multiple Sizes Available: Offered in a range of sizes, with each box clearly labeled with the box quantity for that size.
- Sold by the Box: Packaged for professional and bulk use, with box quantity varying by anchor size.
- Made in the USA: Manufactured domestically using US and global materials for consistent, reliable quality.
- Corrosion-Resistant Performance: The 304 stainless steel composition makes this anchor a strong choice for exterior, marine-adjacent, or moisture-prone applications.
- Trubolt Series: Part of Red Head's established Trubolt line of professional-grade mechanical anchors.
Technical Specifications
- Country of Origin: Made in USA with US and Global Materials
Typical Applications
- Concrete and Masonry Anchoring
- Structural and Equipment Mounting
- Commercial and Industrial Construction
- Outdoor, Wet, and Corrosion-Prone Installations
- Renovation and New Construction Projects
Why Red Head?
Red Head has built a reputation among contractors and installers for dependable mechanical anchoring products, and the Trubolt Series 304 Stainless Steel Wedge Anchor continues that standard with corrosion-resistant stainless steel construction and USA manufacturing. Sold by the box with clearly specified quantities per size, this wedge anchor is designed to deliver consistent, code-conscious performance for professional concrete anchoring applications.
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 1-3/4" (Box of 100) | WW1416 | 1180 | 1400 | 1/4" | 100 | A | 5/8" | 4 ft./lbs. | 2" | 1-1/8" | 1/4" | 5/16" | 3-15/16" | 3/4" | 1/4" - 20 | 7/16" | 662520023008 |
| 1/4" x 2-1/4" (Box of 100) | WW1422 | 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" | 662520023039 |
| 1/4" x 3-1/4" (Box of 100) | WW1432 | 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" | 662520023060 |
| 3/8" x 2-1/4" (Box of 50) | WW3822 | 1620 | 2320 | 3/8" | 50 | B | 3/4" | 25 ft./lbs. | 2-5/8" | 1-1/2" | 3/8" | 7/16" | 5-1/4" | 1-1/8" | 3/8" - 16 | 9/16" | 662520023244 |
| 3/8" x 2-3/4" (Box of 50) | WW3826 | 1620 | 2320 | 3/8" | 50 | C | 1-1/4" | 25 ft./lbs. | 2-5/8" | 1-1/2" | 3/8" | 7/16" | 5-1/4" | 1-5/8" | 3/8" - 16 | 9/16" | 662520023275 |
| 3/8" x 3" (Box of 50) | WW3830 | 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" | 662520023305 |
| 3/8" x 3-3/4" (Box of 50) | WW3836 | 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" | 662520023336 |
| 3/8" x 5" (Box of 50) | WW3850 | 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" | 662520023367 |
| 1/2" x 2-3/4" (Box of 25) | WW1226 | 3455 | 4760 | 1/2" | 25 | C | 1/2" | 55 ft./lbs. | 3-15/16" | 2-1/4" | 1/2" | 9/16" | 7-7/8" | 1-1/4" | 1/2" - 13 | 3/4" | 662520022858 |
| 1/2" x 3-3/4" (Box of 25) | WW1236 | 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" | 662520022889 |
| 1/2" x 4-1/4" (Box of 25) | WW1242 | 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" | 662520022919 |
| 1/2" x 5-1/2" (Box of 25) | WW1254 | 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" | 662520022940 |
| 1/2" x 7" (Box of 25) | WW1270 | 3455 | 4760 | 1/2" | 25 | L | 4-3/4" | 55 ft./lbs. | 3-15/16" | 2-1/4" | 1/2" | 9/16" | 7-7/8" | 3-1/2" | 1/2" - 13 | 3/4" | 662520022971 |
| 5/8" x 3-1/2" (Box of 10) | WW5834 | 5185 | 7120 | 5/8" | 10 | E | 3/4" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 1-3/4" | — | 15/16" | 662520023398 |
| 5/8" x 4-1/4" (Box of 10) | WW5842 | 5185 | 7120 | 5/8" | 10 | F | 1-1/2" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 2-1/2" | — | 15/16" | 662520067415 |
| 5/8" x 5" (Box of 10) | WW5850 | 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" | 662520023428 |
| 5/8" x 6" (Box of 10) | WW5860 | 5185 | 7120 | 5/8" | 10 | J | 3-1/4" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 4-1/4" | — | 15/16" | 662520023459 |
| 5/8" x 7" (Box of 10) | WW5870 | 5185 | 7120 | 5/8" | 10 | L | 3-1/4" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 3-1/2" | — | 15/16" | 662520023480 |
| 5/8" x 8-1/2" (Box of 10) | WW5884 | 5185 | 7120 | 5/8" | 10 | O | 5-3/4" | 90 ft./lbs. | 4-13/16" | 2-3/4" | 5/8" | 11/16" | 9-5/8" | 3-1/2" | — | 15/16" | 662520083408 |
| 3/4" x 4-3/4" (Box of 10) | WW3446 | 6765 | 10120 | 3/4" | 10 | G | 1-1/2" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 2-7/8" | 3/4" - 10 | 1-1/8" | 662520023121 |
| 3/4" x 5-1/2" (Box of 10) | WW3454 | 6765 | 10120 | 3/4" | 10 | I | 2-1/4" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 3-5/8" | 3/4" - 10 | 1-1/8" | 662520023152 |
| 3/4" x 6-1/4" (Box of 10) | WW3462 | 6765 | 10120 | 3/4" | 10 | J | 3" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 4-3/8" | 3/4" - 10 | 1-1/8" | 662520083491 |
| 3/4" x 7" (Box of 10) | WW3470 | 6765 | 10120 | 3/4" | 10 | L | 3-3/4" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 3-1/2" | 3/4" - 10 | 1-1/8" | 662520023183 |
| 3/4" x 8-1/2" (Box of 10) | WW3484 | 6765 | 10120 | 3/4" | 10 | O | 5-1/4" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 3-1/2" | 3/4" - 10 | 1-1/8" | 662520083439 |
| 3/4" x 10" (Box of 10) | WW34100 | 6765 | 10120 | 3/4" | 10 | R | 6-3/4" | 110 ft./lbs. | 5-11/16" | 3-1/4" | 3/4" | 13/16" | 11-3/8" | 1-3/4" | 3/4" - 10 | 1-1/8" | 662520023091 |
| 1" x 6" (Box of 5) | WW10060 | 11770 | 16080 | 1" | 5 | J | 1-1/2" | 300 ft./lbs. | 7-7/8" | 4-1/2" | 1" | 1-1/8" | 15-3/4" | 2-1/2" | 1" - 8 | 1-1/2" | 662520083576 |
* 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:
- 304 Stainless Steel
- Location Rating:
- Wet
- Base Material:
- Concrete
- Product Attribute:
- Male (threaded stud)
Red Head WAS58312;R – Frequently Asked Questions
1) What size drill bit do I need for a Red Head Trubolt 304 stainless wedge anchor?
Bit size matches the anchor diameter, one to one. A 1/4 inch anchor takes a 1/4 inch bit, 3/8 takes 3/8, 1/2 takes 1/2, 5/8 takes 5/8, 3/4 takes 3/4, and the 1 inch anchor takes a 1 inch bit. Drill with a carbide bit sized to the nominal anchor diameter and the anchor body drops straight into the hole.
2) How deep does a Trubolt stainless wedge anchor have to go into the concrete?
Minimum embedment steps up with diameter: 1-1/8 inches for 1/4 inch anchors, 1-1/2 inches for 3/8, 2-1/4 inches for 1/2, 2-3/4 inches for 5/8, 3-1/4 inches for 3/4, and 4-1/2 inches for the 1 inch anchor. Drill the hole deeper than the embedment so the anchor has room, and remember the slab has to be thick enough to take that embedment plus clearance.
3) How do I pick the right anchor length for the thickness of what I'm bolting down?
Work from the max fixture thickness column, which is the anchor length minus embedment and nut clearance. For example a 1/2 inch x 2-3/4 inch anchor handles only 1/2 inch of fixture, the 1/2 x 3-3/4 handles 1-1/2 inches, the 1/2 x 4-1/4 handles 2 inches, and the 1/2 x 7 handles 4-3/4 inches. Add your base plate, shims, and any grout, then choose the length whose max fixture thickness meets or exceeds that total.
4) How close to a slab edge and to each other can these wedge anchors be set?
Minimum edge distance is 2 inches for 1/4 inch anchors, 2-5/8 inches for 3/8, 3-15/16 inches for 1/2, 4-13/16 inches for 5/8, 5-11/16 inches for 3/4, and 7-7/8 inches for 1 inch. Minimum spacing between anchors runs 5/16 inch at 1/4 diameter, 7/16 at 3/8, 9/16 at 1/2, 11/16 at 5/8, 13/16 at 3/4, and 1-1/8 inches at 1 inch. Tight edges are the usual reason a wedge anchor layout has to move or step down a size.
5) What torque should I tighten a Red Head Trubolt stainless wedge anchor to?
Max installation torque is 4 ft/lbs for 1/4 inch, 25 ft/lbs for 3/8, 55 ft/lbs for 1/2, 90 ft/lbs for 5/8, 110 ft/lbs for 3/4, and 300 ft/lbs for the 1 inch anchor. Use a torque wrench, not an impact gun, and stop at the listed figure. Overtorquing a stainless wedge anchor is a common way to gall the threads or spin the stud in the hole.
6) Can I use a Trubolt stainless wedge anchor outdoors or in a wet area like a pool deck or wash bay?
That is what the 304 stainless version is for. The anchor is carried with a wet location rating and a 304 stainless steel body, so it holds up where plated carbon steel wedge anchors rust out, including exterior slabs, wash-down areas and coastal or marine-adjacent work.
7) What wrench or socket size fits the nut on these anchors?
Across the sizes: 7/16 inch for 1/4 inch anchors, 9/16 for 3/8, 3/4 for 1/2, 15/16 for 5/8, 1-1/8 for 3/4, and 1-1/2 inch for the 1 inch anchor. Thread is standard UNC, 1/4-20, 3/8-16, 1/2-13, 3/4-10 and 1-8, so a plain hex nut and washer of that size is what you are driving against.
8) Can I drill through the fixture that is already bolted in place, or do I have to spot the hole first?
Both methods work and each needs a different hole diameter in the fixture. Drilling through a fixture left in place needs a slightly oversize hole: 5/16 inch for a 1/4 anchor, 7/16 for 3/8, 9/16 for 1/2, 11/16 for 5/8, 13/16 for 3/4, 1-1/8 for 1 inch. If you spot the hole and set the fixture afterward, the fixture hole only needs to match the anchor diameter.
9) Is a wedge anchor the right choice for anchoring into block or brick, or just solid concrete?
The Trubolt is a mechanical expansion anchor rated for a concrete base material. It works by the wedge expanding against the wall of a solid, sound hole, so it belongs in poured concrete. Hollow block, brick with voids, or cracked and spalled concrete will not hold the wedge, and those openings call for a different anchor type such as a sleeve anchor or an adhesive anchor with a screen tube.
10) Do these come as a threaded stud or a female drop-in?
The Trubolt is a male anchor, a threaded stud with a nut and washer, so the fixture goes over the protruding thread and is clamped down by the nut. If your detail needs a flush internally threaded insert that a bolt can be removed from repeatedly, a drop-in anchor is the different part you want, not this one.
11) What is the Trubolt part number for a 3/4 inch stainless wedge anchor?
Red Head Trubolt 304 stainless 3/4 inch part numbers run by length: WW3446 (4-3/4 inch), WW3454 (5-1/2), WW3462 (6-1/4), WW3470 (7), WW3484 (8-1/2) and WW34100 (10 inch). All six use a 3/4 inch bit, 3/4-10 thread and a 1-1/8 inch wrench.
12) How many Red Head Trubolt stainless anchors come in a box?
Box quantity drops as diameter grows: 100 per box at 1/4 inch, 50 at 3/8, 25 at 1/2, 10 at both 5/8 and 3/4, and 5 per box at 1 inch. Each size is sold by the box, so order in those multiples when you are counting out a layout.
13) Are Red Head Trubolt stainless wedge anchors made in the USA for a Buy American spec?
The Trubolt 304 stainless wedge anchor is manufactured in the USA using US and global materials, and the country of origin on record is United States. That wording matters on federally funded work, so match it against the exact domestic-content language in your spec.
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