Unbrako™ Fasteners
Socket Cap Screw Distributor – Flat Head Shoulder Bolts
Reliability, higher pressures, stresses, and speeds in today’s machines and equipment demand stronger, more reliable joints and stronger, more reliable fasteners to hold them together. Unbrako’s™ high quality, high strength socket cap screws offer joint reliability and safety with maximum strength and fatigue resistance ensuring you a superior, safer product that meets your most challenging fastener and joint issues. Download our brochure.
The Dale Company is your go-to socket cap screw distributor for all your Unbrako™ Fasteners, flat head shoulder bolts, and more. Call us today to request a quote!
Unbrako™ offers the following socket screw and related products:
- Socket Head Cap Screws
- Standards — Alloy Steel & Stainless Steel
- Low Heads
- Shoulder Screws
- Flat Head Socket Screws
- Button Head Socket Screws
- Socket Set Screws
- Square Head Set Screws
- Pressure Plugs
- Dryseal
- LEVL-SEAL®
- PTFE TELFLON® -coated LEVL-SEAL
- Hex Keys — Short Arm, Long Arm and 6″ Long Arm
- LOC-WEL® Self-Locking Socket Screws
- Dowel Pins
- Metric Socket Screw Products
Unbrako’s™ Engineered Fasteners team can design and manufacture virtually any fastener, in any size or configuration, to solve your toughest fastening problems. Their worldwide production facilities and distribution channels give you the capacity you need to ensure a timely supply for even the highest-volume OEM applications. Unbrako’s™ Engineered Fasteners have been put to the extreme test in such performance sensitive areas as small engines, braking systems, power generating equipment, heavy manufacturing, and commercial printing equipment. Unbrako’s™ proven engineered fasteners consistently perform where others have failed.
Unbrako™ offers:
- Hexagon sockets, TORX® drive configurations, 12-point, hex drives
- Internal and external threads
- Full threaded and double-ended studs
- Alloy steel, stainless steel, carbon steel, and exotic alloys
- Large sizes
- Lengths up to 144″ (3600mm)
- Thread rolling capability through 3″ (75mm) diameter
- Specific thread designs and root radius run-outs
- Cadmium, zinc, tin, chemical black oxide, phosphate, and organic platings (standard, propriety, and unique-to-application coatings)
The Dale Company is your go-to socket cap screw distributor for all your Unbrako™ Fasteners, flat head shoulder bolts, and more. Call us today to request a quote!
| tensile psi (room temp.) | 107 cycle dynamic fatigue (psi) | operating temperatures (unplated) | Types | Application/Features | |
|---|---|---|---|---|---|
| Socket Head Cap Screws 1960 Series Alloy Steel |  |
 Use alloy for maximum tensiles; up to 190,000 psi, highest of any socket cap screw |
190,000 | 20,000 | 550°F |
| 180,000 | |||||
| Socket Head Cap Screws 1960 Series Stainless Steel |  |
Use stainless for corrosive, cryogenic or elevated temperature environments, hygienic cleanliness. | 95,000 | 30,000 | 800°F |
| Socket Head Cap Screws Low Head Series |  |
Use in parts too thin for standard height heads and where clearance is limited | 170,000 | 20,000 | 550°F |
| Shoulder Screws |  |
Tool and die industry standards; also replace costly special parts-shafts, pivots, clevis pins, guides, trunnion mountings, linkages, etc. |
heat treat level psi | shear strength in psi | 550°F |
| 160,000 | 96,000 | ||||
| Flat Head Socket Screws Alloy/ Stainless |  |
 Uniform, con-head angle for trolled 82° under maximum flush ness and side wall contact; non-slip hex socket prevents marring of material |
160,000 | 96,000 | 550°F |
| 800°F | |||||
| Button Head Cap Screws Alloy/ Stainless |  |
Low heads streamline design, use in materials too thin to countersink; also for noncritical loading requiring heat treated screws |
160,000 | 96,000 | 550°F |
| 800°F | |||||
PERFORMANCE (See Note 1)
| Types | Applications/Features | Hardness | Operating Temperatures (unplated) | ||
|---|---|---|---|---|---|
| Square Head Set Screws |  |
Half-dog or self-locking cup points only. Use where maximum tightening torques are required | Rc 45 (min.) | 450°F | |
| Socket Set Screws Alloy Steel |  |
Fasten collars, sheaves, gears, knobs on shafts. Locate machine parts. Cone, half-dog, flat, oval, cup and self-locking cup points standard | Rc 45-53 | 450°F | |
| Socket Set Screws Stainless Steel |  |
Use stainless for corrosive, cryogenic or elevated temperatures environments. Plain cup point standard. Other styles on special order | Rb96-Rc33 | 800°F | |
| Pressure Plugs 3/4″ Taper Dryseal |  |
Features common to 3/4″ and 7/8″ tapers: Dryseal threads for positive seal without sealing compound; controlled chamfer for faster starting | Rc 34-40 | 550°F | |
| 800°F | |||||
| Rb 82 Typical | 400°F Brass | ||||
| 7/8″ Taper LEVL-SEAL® Pressure Plug | |
LEVL-SEAL® plug features: controlled 7/8″ tape in 3/4″ taper hole seats plug level, flush with surface within 1/2 pitch. LEVL-SEAL plug is an UNBRAKO original | Rc 35-40 | 550°F | |
| Rb 82 Typical | 400°F Brass | ||||
| PTFE Coated | |
PTFE coated plugs seal at 60% lower seating torques without tape or compound; install faster at lower cost; smaller sizes can be power installed; LEVL-SEAL plug type for 100% flush seating | Rc 35-40 | 450°F (uncoated) | |
| Hex Keys |  |
Tough, ductile, for high torquing; accurate fit in all types socket screws; size marked for quick identity | Rc 47-57 | torsional shear in-lb. min. 1.2 to 276.000 | |
| Dowel Pins (Standard) |  |
Formed ends, controlled heat treat; close tolerances; standard for die work; also used as bearings, gages, precision parts, etc. | core: Rc 50-58 | calculated shear psi | surface |
| 150,000 | 8 microinch (max) | ||||
| Dowel Pins Pull-Out Type |  |
For use in blind holes. Easily removed without special tools. Reusable, Save money. No need for knock-out holes. Same physicals, finish, accuracy and tolerances as standard UNBRAKO dowel pins. | surface: Rc 60 (min.) | 150,000 | 8 microinch (max) |
24 HOUR SERVICE
Specials are made to order with short lead times STOCKED SIZES AVAILABLE
Specializing in Unbrako Screws, Unbrako Pressure Plugs, Unbrako Dowel Pins, socket head cap screws, socket set screws, flat head socket screws, square head set screws, LOC-WEL (R) Self-Locking Socket Screws, Metric socket screw products.
Our team is ready to provide a personalized quote for your project needs. Whether you need standard or custom fasteners, we have the expertise and quality products to meet your requirements. Contact us now to get started.
Specials are made to order with short lead times.
The Dale Company can ship special orders the same day, including a ’24 hour service’.
Let us know about your project and a Dale Company representative will contact you.
Have Questions? Give us a Call!
(713) 928 3437If you have any questions about the products, quotes, or desire any additional information please get in touch. One of our Dale representatives will reach out to you shortly to address any of your concerns or inquiries.
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