Product Summary

1" Under Head Length, 3/8"-16 Thread Pitch

  • Comes in a set of 16 and has a 5/16" hex head
  • These are great for getting the proper torque in tight spaces
  • Under head length measures a total of 1" and has a 3/8"-16 thread pitch
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Key Specs

MFG. Part #100-1110
BrandARP
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ARP 100-1110 Details

  • Great for getting the proper torque in tight spaces
  • 3/8-16 x 1" threads
  • 5/16" hex head
  • Set of 16

ARP 100-1110 Specifications

KEY SPECS
MFG. Part #100-1110
BrandARP
GENERAL
Under Head Length1"
Thread Pitch3/8"-16
Wrench TypeHex
Sold in QuantitySet
GTIN Code672036000097

Ratings & Reviews

4.8

13 Reviews

Overall Assessment

Customers praise our ARP product's undeniable quality and practicality. Highlighted features include perfect sizing for SBC headers and an ability to fix leakage issues with inclusion of washers. Users appreciate the smaller bolt heads, which simplifies maintenance and provides easy usage. The product stands out for securing snug fit and not backing off, delivering reliability. Its performance in race cars particularly merits that it reportedly outperforms other off-the-shelf header bolts. Long-time users express regret for not discovering this product earlier, affirming its unmatched market reputation.

4.8

13 reviews

5

11

4

2

3

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2

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1

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Filter by Ratings

Small Head Pattern Fits Small Space

4.0

7 months ago

18 Motorsports

Central WI

Verified

Used on header for race car.

Would Recommend

Great product

5.0

2 years ago

RK

East Texas

Verified

Best quality header bolts

Would Recommend

I would buy again

5.0

2 years ago

51Coupe

Fox lake Il

Verified

Used on some tight space on fenderwell headers worked great

Would Recommend

Quality ARP product

5.0

4 years ago

Burnout Brian

Arizona

Verified

They are perfect for SBC headers, fixed my leaking issue & comes with washers.

Would Recommend

Nice header bolt set

5.0

5 years ago

DB

Surprise AZ

Typical ARP item - nothing but the best.

Would Recommend

I will buy these for every header I bolt on

5.0

5 years ago

Hardy

Ridgeland SC

Verified

Sbc in a racecar where taking headers off normally means 1/4 turn at a time with a wrench. No more

Would Recommend

Perfect

5.0

6 years ago

Rex

Muscle Shoals Al

Verified

Worked great

Would Recommend

Great Setup

5.0

6 years ago

Kyle

PA

Verified

Perfect for large OD headers. Have had issues with off-the-shelf chain auto store header bolts with too large of heads. These fit secure and perfect

Would Recommend

They must have cornered the market!

5.0

9 years ago

Pat

Collinsville, OK

Verified

3/8" X 1" header bolts are a dime a dozen. I've bought the fancy locking bolts, but unfortunately cannot use a regular wrench to tighten them. These ARP bolts with 5/16" heads are a breeze to maintain. I wish I'd have known about these 40 years ago!

Would Recommend

I would buy these again they work excellent for my product

4.0

9 years ago

Lj

Bremerton wash

Verified

The small head works great for the headers

Would Recommend

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