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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Hillman 5/16-18 x 3-1/2 in Stainless Steel Hex Head Cap Screw, 50-PackStainless Steel Hex Head Cap Screw, 5 16 18 x 3 1 2, 50 Pack Durable 18 8 stainless steel hex head cap screws for high torque fastening in tapped holes or with nuts. Coarse, partially threaded shank with washer face under the head delivers a secure seal and corrosion resistance for indoor outdoor projects. Key Features: Corrosion Resistant Stainless Steel: 18 8 stainless steel for long lasting performance in outdoor and marine environments High Torque
Stainless Steel Hex Head Cap Screw, 5/16-18 x 3-1/2, 50-Pack
Durable 18-8 stainless steel hex head cap screws for high-torque fastening in tapped holes or with nuts. Coarse, partially threaded shank with washer face under the head delivers a secure seal and corrosion resistance for indoor/outdoor projects.
Key Features:
- Corrosion-Resistant Stainless Steel: 18-8 stainless steel for long-lasting performance in outdoor and marine environments
- High-Torque Hex Cap Head: Hex head with machine threads supports strong, reliable tightening with a wrench or drill
- Washer Face Under Head: Built-in washer face helps create a better seal and distribute load
- Partially Threaded (USS): Coarse threads with a solid shank for strength where shear resistance matters
- Bulk 50-Pack: Convenient boxed pack for jobs requiring multiple fasteners
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Hillman |
| Type | Hex head cap screw |
| Diameter / Thread Pitch | 5/16-18 |
| Length | 3-1/2 inch |
| Material | 18-8 Stainless Steel |
| Thread Type | Coarse |
| Thread Coverage | Partially threaded (USS) |
| Head Feature | Washer face under head |
| Finish | Stainless steel |
| Number in Package | 50 |
| Packaging Type | Boxed |
| Installation | Tighten with wrench or drill |
| Package Dimensions (HxWxL) | 2 in x 3.5 in x 4.5 in |
| Package Weight | 3.3 lb |
Frequently Asked Questions (FAQ):
Q: Are these fully threaded?
A: No. They are USS partially threaded along the shank with coarse machine threads.
Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill using an appropriate hex socket.
Q: Can these be used outdoors?
A: Yes. The 18-8 stainless steel offers enhanced corrosion resistance suitable for outdoor and damp environments.
Q: Do they have a built-in washer?
A: They feature a washer face under the head to improve sealing and load distribution.
Q: What size are these screws?
A: 5/16-18 thread diameter/pitch and 3-1/2 inch length.
Sleek, Industrial Fastening with Enduring Stainless Poise
These stainless hex cap screws bring a crisp, tailored precision to any build, marrying function with a polished industrial aesthetic. The subtle washer face and clean shank lines create a refined detail that elevates cabinetry, fixtures, and custom metalwork. Style them with brushed steel hardware and natural woods for a modern, textural contrast. A staple of luxurious craftsmanship, they deliver performance and poise in equal measure.
Upgrade your project with these corrosion-resistant stainless hex cap screws—order the 50-pack today for dependable, high-torque fastening.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2245 reviews
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Reviewed in the United States on May 9, 2026
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great Lotion
Scent: Collagen, Size: 17 Fl Oz (Pack of 1)
I am loving this lotion. It is a soft non greasy lotion that hydrates well.
It has a pretty smell. Applies to my skin nicely. I highly recommend this lotion if you love Olay.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Eradicated Decade Long battle with KP on INNER KNEES in less than 1 week. NEW KP HOLY GRAIL CREAM!!
Scent: Sweet Vanilla & Soft Wood, Size: 10 Fl Oz (Pack of 1)
About my skin- 43 year old fair, normal to dry, very sensitive, prone to KP bumps on back of arms, inner knees and if aggravated - all over thighs. I am pretty careful with what I use and I even have to be careful within the same brand if something DOES work. I have spent a long time being snobby about “drugstore” brands because over the years they have all aggravated my now mostly under control KP. I recently was convinced to try the Olay SUper Serum body wash because a friend with similar issues said she was really impressed. I have been also! In fact, the body wash for “Rough and Bumpy” skin has been my go-to wash for the past few months and has visibly improved my overall skin texture and has not aggravated any KP flare ups. I was very excited to try this body cream, since the current one I use is over 50 dollars for a similar size jar. I like to use A LOT of moisturizer and the cost is really annoying and close to being prohibitive when you use a jar a week. I purchased this cream (packaged well, no leaked, fresh product, overnight delivery). I am in LOVE! It smells great, very high end. The fragrance is real so if you hate fragrance, bot for you. I wear Baccarat Rouge and this lotion does not interfere with that, and it does dissipate after a while (I asked others to be sure). The crazy thing is this… most of the time my KP bumps on my inner knees are there, but when I have them under control they just lack color and are a lot smoother. THEY ARE GONE AFTER 1 WEEK.. THIS IS THE FIRST TIME IN THE DECADE OR SO I HAVE HAD KP BUMPS ON MY INNER KNEEES THAT THEY HAVE BEEN COMPLETELY GONE. I do not feel it is the combo of the wash and this cream, as I have been using a different wash while out of town. The only new item I used was THIS CREAM, alone, without my other more expensive product. I am kind of blown away and delighted. Also, I was able to use less of this to feel moisturized than I have been using with the “fancy” brand. The scent is warm, slightly vanilla, expensive and not too floral. Cream absorbs quickly and well, leaves skin feeling plumped, soft, no greasy residue and MAJOR BONUS… NO PILLING. That is a nightmare when a product does that. It absorbs quickly, leaves no marks on clothes when squeezing into a pair of black legggings…. All the good stuff you may forget to look for but notice when they happen. I HIGHLY RECOMMEND TRYING, if a light, high end fragrance is good with you. To reiterate- the fragrance is not crazy strong but it also calms WAY down about 30 mins after applying and melts into just a nice feminine clean but warm (not body spray type of vibe) scent that is not very noticeable to me or others. No where near as strong as like a Bum Bum cream (which I LOVE IN SUMMER) and smells high end, not like cheap shampoo or air freshener. Get this!!!!!!! It also did not irritate my chest area which for me is always a little prone to red spots when I use fragranced products. No irritation and dude… NO BUMPS FOR FIRST TIME IN A DECADE OR MORE. WOW!!!!
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Reviewed in the United States on October 9, 2025
★★★★★ 5
THE BEST LOTION I HAVE EVER USED
Scent: Sweet Vanilla & Soft Wood, Size: 18.5 Fl Oz (Pack of 1)
THIS WINTER AND HAVING THE HEAT ON HIGHER THEN I NORMALLY DO HAS DONE A NUMBER ON MY SKIN. IT IS SO DRY AND I HAVE TRIED SO MANY THINGS AND NOTHING HAS REALLY WORKED. SO I GAVE IN AND SPENT THE MONEY AND TRIED THIS. I AM SO GLAD I DID. THIS WAS WORTH EVERY PENNY. I LOVED IT SO MUCH I BOUGHT ANOTHER BOTTLE JUST TO HAVE SO I WOULDN'T RUN OUT. I START OUT WITH THE BODY WASH WITH THE OLAY SUPER SERUM BODY WASH AND JUST AFTER ONE WASH MY SKIN WAS MUCH SOFTER AND SMOOTHER. YOU DO NOT NEED A LOT AS IT LATHERS UP NICELY IT SMELLS GREAT AND IT RINSES OFF GREAT LEAVING YOUR SKIN FEELING CLEAN AND SOFT. IT DOESN'T HAVE A STRONG SCENT TO IT WHICH IS FINE . I FOLLOW IT WITH IT WITH THIS SUPER SERUM LOTION JUST TO MAKE SURE THE SKIN STAYS SOFT. THIS LOTION IS SO SOFT AND SILKY. IT ABSORBS QUICKLY INTO YOUR SKIN WITHOUT LEAVING YOUR SKIN FEELING GREASY. IT IS LIGHTWEIGHT AND LEAVES YOU FEELING SOFT WITHOUT THAT DRY CRACKED APPEARANCE. THE SCENT ISN'T VERY STRONG TO ME WHICH IS FINE BECAUSE I WEAR PERFUME SO I DO NOT HAVE TO WORRY ABOUT THE SCENTS MIXING. I DEFINITELY RECOMMEND THIS REGIMEN TO ANYONE SUFFERING FROM DRY SKIN.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
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