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Stainless Steel Nylon Insert Hex Lock Nuts 4-40 6-32 8-32 10-32 1/4-20 5/16, 3/8
$3.95 to $157.79

Stainless Steel Nylon Insert Hex Lock Nut - M2.5 M3 M4 M5 M6 M8 M10 M12 DIN 985
$4.75 to $112.24

M6 Stainless Steel Socket Head Cap Screws, A2 / 18-8 Metric DIN 912, 1.0 Coarse
$5.63 to $106.23

1/4", 5/16" & 3/8" Stainless Steel Fender Washers 304 A2 - OD 1", 1-1/4", 1-1/2"
$5.52 to $137.49

US / Inch - Fender (Penny) Washers, Zinc Plated Steel - #10 (3/16"), 1/4", 5/16"
$4.82 to $175.84

Stainless Steel Flat Washer DIN 125A M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20
$4.53 to $71.45

E-Z Hex Flanged Threaded Inserts for Soft Wood - 8-32, 10-24, 1/4-20, 5/16, 3/8
$6.75 to $171.08

Stainless Steel Finished Hex Nuts, 1/4-20, 1/4-28, 5/16-18 5/16-24 3/8-16 3/8-24
$5.40 to $99.45

Nylon Insert Lock Nuts Steel w/ Black Oxide - M3 M4 M5 M6 M8 M10 DIN 985 Class 8
$5.14 to $86.28

Metric Stainless Steel Hex Nuts DIN 934 M2 M2.5 M3 M3.5 M4 M5 M6 M8 M10 M12 M14
$4.51 to $82.58

M6 Socket Head Cap Screws, 12.9 Alloy Steel w/ Black Oxide DIN 912, Coarse 1.0
$5.05 to $136.61

M4 Flat Head Socket Cap Screws, 12.9 Steel w/ Black Oxide DIN 7991, 0.70 Coarse
$5.04 to $71.08

US / Inch - SAE Flat Washers, Cr+3 Zinc Plated Steel, #4 #6 #8 #10 1/4 5/16 3/8"
$4.58 to $54.17

M5 Socket Head Cap Screws, 12.9 Alloy Steel w/ Black Oxide DIN 912, Coarse 0.80
$5.02 to $44.32

Split Lock Washers Thru Hardened Alloy, Zinc Yellow 1/4, 5/16, 3/8, 7/16 1/2 3/4
$5.42 to $383.19

M6 Stainless Steel Button Head Socket Cap Screws A2, Metric ISO 7380 1.0 Coarse
$5.49 to $119.49

5/16" Stainless Steel Hex Lag Bolts / Lag Screws / Coach Screw for Wood, 18-8
$14.56 to $249.84

Serrated Hex Flange Lock Nuts DIN 6923, A2 Stainless Steel - M4 M5 M6 M8 M10 M12
$4.99 to $78.27

M3 Socket Head Cap Screws, 12.9 Alloy Steel w/ Black Oxide DIN 912, Coarse 0.50
$5.02 to $31.43

M6 Button Head Socket Cap Screws, 12.9 Steel w/ Black Ox ISO 7380, 1.0 Coarse
$5.17 to $87.52

1/4-20 Stainless Steel Carriage Bolts, Grade 18-8, Available in 1/2" to 6" long
$6.97 to $85.06

M8 Stainless Steel Socket Head Cap Screws, A2 / 18-8 Metric DIN 912, 1.25 Coarse
$7.31 to $101.00

M8 Socket Head Cap Screws, 12.9 Alloy Steel w/ Black Oxide DIN 912, Coarse 1.25
$6.10 to $47.57

OptiSeal Heat Shrink Crimp Step-Down Butt Connectors, Crystal Clear Sealed NSPA
$11.85 to $101.16

F436 Structural Flat Washers Zinc Yellow 1/4, 5/16, 3/8, 7/16, 1/2, 9/16 5/8 3/4
$5.07 to $166.18

M4 Socket Head Cap Screws, 12.9 Alloy Steel w/ Black Oxide DIN 912, Coarse 0.70
$5.03 to $38.04

Flat Washer Zinc Plated 10.9 Steel DIN 125A 200 HV - M3 M4 M5 M6 M8 M10 M12
$4.39 to $49.15

Stainless Steel Fender (Penny) Washers, A2 DIN 9021 - M3 M4 M5 M6 M8 M10 M12
$4.42 to $68.49

M4 / 4mm Phillips Pan Head Machine Screws, Stainless Steel A2, DIN 7985, 5-65mm
$4.65 to $38.24

#10-32 Phillips Pan Head Screws, Stainless Steel 18-8, Various Lengths, UNF/Fine
$4.98 to $169.79

M5 Button Head Socket Cap Screws, 12.9 Steel w/ Black Ox ISO 7380, 0.80 Coarse
$5.39 to $41.18

3/8" Stainless Steel Hex Lag Bolts / Lag Screws / Coach Screw for Wood, 18-8 304
$18.95 to $246.12

#8-32 Phillips Pan Head Screws, Stainless Steel A2, Various Lengths, UNC/Coarse
$4.90 to $21.45

#6-32 Phillips Flat Head Machine Screws, 82° Countersunk A2 18-8 Stainless Steel
$4.60 to $66.00

#4-48 Cup Point Socket Set Screws, Alloy Steel w Black Oxide, US / Inch SAE Fine
$5.12 to $479.11

M3 Button Head Socket Cap Screws, 12.9 Steel w/ Black Ox ISO 7380, 0.50 Coarse
$5.16 to $20.23

M3 / 3mm Phillips Pan Head Machine Screws, Stainless Steel A2, DIN 7985, 4-50mm
$4.45 to $15.83

#10 Max Drive 6-Lobe Outdoor Wood Decking / Fencing Screws SKT Coating ACQ
$7.91 to $166.93

Steel Hex Nuts w/ Plain Finish, DIN 934 Class 10 - Metric M3 M4 M5 M6 M8 M10
$4.37 to $54.90

5/16-18 Stainless Steel Carriage Bolts, Grade 18-8, Available in 5/8" to 7" long
$8.08 to $127.37

4-40 x 1/4" & 5/16" Stainless Steel Saddle Height Screws For Fender Stratocaster
$5.76

Serrated Hex Flange Lock Nuts, Case Hardened Zinc - 6-32 8-32 10-24 10-32 1/4-20
$5.74 to $89.87

3/8-16 Hex Cap Screws / Tap Bolt, Zinc Yellow Grade 8 Alloy Steel Coarse Thread
$6.97 to $61.49

1/4" Hex Lag Bolts / Lag Screws / Coach For Wood, Zinc Plated steel Grade A
$7.03 to $76.38

Metric Stainless Steel Split Lock Washers DIN 127B - M2 M2.5 M3 M4 M5 M6 M8 M10
$4.45 to $20.60

M3 / 3mm Phillips Pan Head Machine Screws, Steel, Black Oxide, DIN 7985A Metric
$4.88 to $24.84

M8 Stainless Steel Button Head Socket Cap Screws A2, Metric ISO 7380 1.25 Coarse
$7.02 to $90.31

M8 Socket Set Screws, Cup Point, 45H Black Alloy Steel, High-Strength DIN 916
$5.34 to $53.18
About us
Welcome to the official Monster Bolts eBay Store. Formerly named Diablo-Tuning.
Monster Bolts was born and raised in the information age to meet the current and future needs of our customers. This is not your grandparents' antiquated local hardware store. Monster Bolts is a global fastener superstore with massive goals for the near and long term. Currently we are supplying full lines of Alloy Steel and Stainless Steel with an ever-growing Titanium fastener line. We have partnered with the biggest names in the field and offer incredibly competitive pricing, near-instant shipping and industry-leading customer service.
Monster Bolts was born and raised in the information age to meet the current and future needs of our customers. This is not your grandparents' antiquated local hardware store. Monster Bolts is a global fastener superstore with massive goals for the near and long term. Currently we are supplying full lines of Alloy Steel and Stainless Steel with an ever-growing Titanium fastener line. We have partnered with the biggest names in the field and offer incredibly competitive pricing, near-instant shipping and industry-leading customer service.
Seller feedback (227,459)
- s***1 (388)- Feedback left by buyer.Past 6 monthsVerified purchaseReceived multi-item discount. Items were well-packaged in a protective vinyl mailer, arrived in only three days in great shape, and were exactly as described...would highly recommend this conscientious seller.
- d***t (600)- Feedback left by buyer.Past 6 monthsVerified purchasehey, here i am a third time ... Bought multiple items from Monster Bolts Fasteners. Great prices Exactly as described. Great to deal with people who care about service and products . Everything is perfect. Great communication . High quality stainless. I am very happy with this transaction, If you want to be happy ... and are tired of chasing your tail trying to find those nuts and bolts, shop here with Monster Bolts Fasteners. Check with them, 99% they have it. AAA+++
- e***o (1028)- Feedback left by buyer.Past 6 monthsVerified purchaseQuality screws, new condition as listed, good price. Excellent seller communication and service, seller shipped items fast though they were delayed in transit. Great seller and highly recommend them.
- i***i (321)- Feedback left by buyer.Past 6 monthsVerified purchaseSeller did their part in shipping the order, but USPS sent it on a world tour and somehow it is now out for delivery in Carolina, Puerto Rico 00984. The destination was in East TN. Seller issued a full refund and was very receptive to communication. I would buy from again A++
- m***n (245)- Feedback left by buyer.Past monthVerified purchaseFast shipping, good packaging, good communication, item exactly as described. I could not find the 8mm button head bolts locally. The bolts were exactly what I needed. Thanks.
- n***6 (145)- Feedback left by buyer.Past 6 monthsVerified purchasePurchase these items, it took an extremely long time to get to me only because of the failure of the United States disposal Service the seller was excellent with his communication and keeping me up-to-date with what was going on with the shipping situation with United States Postal Service. I will definitely be purchasing from them again, and I would definitely recommend the seller.