Metric Bolt Assortments | McMaster-Carr

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82 Products

Hex Head Screw Assortments

These assortments include hex head screws and hex nuts. Length is measured from under the head.

Grade 5 and Class 8.8 steel screws are suitable for fastening most machinery and equipment. Zinc-plated steel screws resist corrosion in wet environments.

Grade 8 and Class 10.9 steel screws are about 25% stronger than Grade 5 and Class 8.8 steel screws.

For technical drawings and 3-D models, click on a part number.

Metric
Number of Pieces	Includes	Specifications Met	Container Type		Each
Class 8.8 Steel
2,295	765 Hex Head Screws (M4 to M12 in 10 mm to 60 mm Lengths) 765 Hex Nuts (M4 to M12) 765 Lock Washers (For M4 to M12 Screw Sizes)	DIN 933, DIN 934, DIN 127B	Metal Box and Plastic Box	000000000	0000000
Zinc-Plated Class 8.8 Steel
465	315 Hex Head Screws (M4 to M10 in 12 mm to 50 mm Lengths) 150 Hex Nuts (M4 to M10)	DIN 933, DIN 934	Plastic Box	000000000	000000
2,295	765 Hex Head Screws (M4 to M12 in 10 mm to 60 mm Lengths) 765 Hex Nuts (M4 to M12) 765 Lock Washers (For M4 to M12 Screw Sizes)	DIN 933, DIN 934, DIN 127B	Metal Box and Plastic Box	000000000	000000
Class 10.9 Steel
575	165 Hex Head Screws (M6 to M12 in 16 mm to 40 mm Lengths) 165 Hex Nuts (M6 to M12) 245 Lock Washers (For M6 to M12 Screw Sizes)	DIN 933	Metal Box	000000000	000000

Socket Head Screw Assortments

Length is measured from under the head.

Black-oxide alloy steel screws resist corrosion in dry environments.

18-8 stainless steel screws are chemical resistant and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

Metric
Number of Pieces	Screw Sizes Included	Specifications Met	Container Type		Each
Black-Oxide Class 12.9 Alloy Steel
120	M3 to M8 in 10 mm to 35 mm Lengths	DIN 912, ISO 4762	Plastic Box	000000000	000000
210	M3 to M10 in 10 mm to 35 mm Lengths	DIN 912, ISO 4762	Plastic Box	000000000	00000
425	M5 to M12 in 16 mm to 60 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
600	M5 to M10 in 16 mm to 40 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
765	M4 to M12 in 10 mm to 60 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
880	M4 to M10 in 10 mm to 40 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
1,058	M4 to M8 in 10 mm to 40 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
18-8 Stainless Steel
240	M2 to M10 in 8 mm to 30 mm Lengths	DIN 912	Plastic Box	000000000	00000
288	M6 to M12 in 16 mm to 60 mm Lengths	DIN 911, DIN 912, ISO 2936, ISO 4762	Metal Box	000000000	000000
425	M5 to M12 in 16 mm to 60 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
765	M4 to M12 in 10 mm to 60 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000
1,000	M2 to M5 in 4 mm to 25 mm Lengths	DIN 912, ISO 4762	Metal Box	000000000	000000

Hex-Drive Rounded Head Screw Assortments

These assortments include button head screws. Length is measured from under the head.

Black-oxide alloy steel screws resist corrosion in dry environments.

18-8 stainless steel screws are chemical resistant and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

Metric
Number of Pieces	Screw Sizes Included	Specifications Met	Container Type		Each
Black-Oxide Class 10.9 Alloy Steel
258	M4 to M8 in 8 mm to 40 mm Lengths	ISO 7380	Plastic Box	000000000	000000
18-8 Stainless Steel
300	M3 to M8 in 8 mm to 30 mm Lengths	ISO 7380	Plastic Box	000000000	00000

Phillips Rounded Head Screw Assortments

Assortments include pan head screws. Length is measured from under the head.

Zinc-plated steel screws resist corrosion in wet environments.

Metric
Number of Pieces	Sizes Included	Specifications Met	Container Type		Each
Zinc-Plated Steel
1,500	M3 to M6 in 6 mm to 20 mm Lengths	DIN 7985	Metal Box	000000000	0000000

Flat Head Screw Assortments

Flat head screws are angled under the head to fit flush within countersunk holes. Length is measured from the top of the head.

Black-oxide alloy steel screws resist corrosion in dry environments.

18-8 stainless steel screws are chemical resistant and may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

Metric
Number of Pieces	Screw Sizes Included	Specifications Met	Container Type		Each
Black-Oxide Class 10.9 Alloy Steel
258	M4 to M8 in 10 mm to 40 mm Lengths	DIN 7991	Plastic Box	000000000	000000
18-8 Stainless Steel
300	M3 to M8 in 6 mm to 25 mm Lengths	DIN 7991	Plastic Box	000000000	00000

Set Screw Assortments

Cup Point

Set screws exert pressure at the tip to hold objects in place. All have a cup point with a thin edge that digs into the contact surface for a secure hold. Length listed is the overall length.

Black-oxide alloy steel screws resist corrosion in dry environments.

18-8 stainless steel screws are chemical resistant and may be mildly magnetic.

Metric
Number of Pieces	Screw Sizes Included	Drive Style	Container Type	Specifications Met		Each
Black-Oxide Alloy Steel
1,100	M3 to M8 in 3 mm to 12 mm Lengths	Hex	Plastic Box	DIN 916	000000000	0000000
18-8 Stainless Steel
120	M4 to M8 in 5 mm to 12 mm Lengths	Hex	Plastic Box	DIN 916	000000000	00000

Fastener Maintenance Assortments

Black-oxide steel fasteners resist corrosion in dry environments.

Zinc-plated steel fasteners resist corrosion in wet environments.

18-8 stainless steel fasteners are chemical resistant and may be mildly magnetic.

Metric
Number of Pieces	Includes	Drive Style	Specifications Met	Container Type		Each
Zinc-Plated and Black-Oxide Steel
7,060	570 Socket Head Screws (M4 to M12) 750 Rounded Head Screws (M3 to M6) 580 Hex Head Screws (M4 to M12) 60 Set Screws (M4 to M6) 1,475 Hex Nuts (M3 to M12) 1,225 Flat Washers (For M4 to M12 Screw Sizes) 1,600 Lock Washers (For M3 to M12 Screw Sizes) 800 Spring Lock Washers (For M4 to M8 Screw Sizes)	External Hex, Hex, Phillips	DIN 125, DIN 127B, DIN 7985, DIN 912, DIN 916, DIN 933, DIN 934	Metal Drawer Cabinet	000000000	000000000
18-8 Stainless Steel
2,200	300 Flat Head Screws (M3 to M4) 300 Rounded Head Screws (M3 to M4) 600 Hex Nuts (M3 to M10) 500 Flat Washers (For M3 to M10 Screw Sizes) 500 Lock Washers (For M3 to M10 Screw Sizes)	Phillips	DIN 125, DIN 127B, DIN 7985, DIN 934, DIN 965	Metal Box	000000000	000000
7,060	570 Socket Head Screws (M4 to M12) 750 Rounded Head Screws (M3 to M6) 580 Hex Head Screws (M4 to M12) 60 Set Screws (M4 to M6) 1,475 Hex Nuts (M3 to M12) 1,225 Flat Washers (For M4 to M12 Screw Sizes) 1,600 Lock Washers (For M3 to M12 Screw Sizes) 800 Spring Lock Washers (For M4 to M8 Screw Sizes)	External Hex, Hex, Phillips	DIN 125, DIN 127B, DIN 7985, DIN 912, DIN 916, DIN 933, DIN 934	Metal Drawer Cabinet	000000000	00000000

T-Slotted Framing Fasteners

Screw and nut sets or nuts secure brackets and other accessories to rails.

For technical drawings and 3-D models, click on a part number.

End-Feed Fasteners

Single Nut with Button Head

Single Nut with Flanged-Button Head

Double Nut with Button Head

Double Nut with Flanged-Button Head

Triple Nut with Flanged-Button Head

Self-Aligning Nut with Button Head

End-feed fasteners slide into the end of the rail to attach components.

Button-head fasteners are more compact, so they're better for tight spaces than other screws for T-slotted framing.

Use double and triple fasteners to install brackets with multiple holes. They eliminate the need for a single nut and screw for each hole.

Self-aligning fasteners have a ridge that keeps them centered in the T-slot.

For Rail Ht.			Screw		Nut		Mounting
Single	Double and Quad	Triple	Color	Material	Color	Material	Hole Location	Fastener Thread Size	Fastener Thread Lg.	Pkg. Qty.		Pkg.
Single Nut with Button Head
1", 25mm	2", 50mm	3"	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	1/4"-20	1/2"	4	000000000	00000
20mm	40mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	M5	8mm	4	00000000	0000
30mm	60mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	M6	16mm	4	00000000	0000
30mm	60mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M6	16mm	4	00000000	0000
30mm	60mm	__	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	M8	16mm	4	00000000	0000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M8	16mm	4	00000000	0000
45mm	90mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	M8	16mm	4	00000000	0000
Single Nut with Flanged-Button Head
1", 25mm	2", 50mm	3"	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center	1/4"-20	1/2"	4	000000000	0000
20mm	40mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M5	8mm	4	00000000	0000
20mm	40mm	__	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	M5	8mm	4	00000000	0000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M8	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	M8	16mm	4	00000000	0000
45mm	90mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M8	16mm	4	00000000	0000
45mm	90mm	__	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	M8	16mm	4	00000000	0000
Double Nut with Button Head
30mm	60mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M6	16mm	4	00000000	0000
Double Nut with Flanged-Button Head
20mm	40mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M5	8mm	4	00000000	0000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M8	16mm	4	00000000	0000
45mm	90mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	M8	16mm	4	00000000	0000
Triple Nut with Flanged-Button Head
20mm	40mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center, Offset	M5	8mm	4	00000000	0000
30mm	60mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center, Offset	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center, Offset	M8	16mm	4	00000000	00000
45mm	90mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Center, Offset	M8	16mm	4	00000000	00000
Self-Aligning Nut with Button Head
30mm, 40mm	60mm, 80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	M6	16mm	4	00000000	0000
30mm, 40mm	60mm, 80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	M8	16mm	4	0000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	M8	20mm	4	00000000	0000

Drop-In Fasteners

Spring Nut
with Button
Head

Spring-Tab Nut with Button Head

Spring-Loaded Ball Nut with Button Head

Spring-Loaded Ball Nut with Flanged-Button Head

Nut with Handle and Flanged-Button Head

Nut with Stud

Hammer Nut with Button Head

Hammer Nut with Socket Head

Drop-in fasteners can be placed directly into the T-slot to attach components—no need to disassemble your existing structure.

Push-in nuts clip in to the rail and expand when you tighten the screw. Use them to install lightweight objects such as document holders.

Button-head fasteners are more compact, so they're better for tight spaces than other screws for T-slotted framing.

Spring and spring-tab fasteners hold the nut in place so it won't slide down vertical rails.

Spring-loaded ball fasteners hold the nut in place so it won’t slide along the rails.

Fasteners with a handle are easy to grip and drop in place. The flexible rubber handle bends to fit underneath objects mounted to the rail.

Fasteners with stud twist into place. Tighten with a socket wrench.

Hammer fasteners drop in to the slot and turn into place when the screw is tightened. They're serrated to break the anodized coating on the rail, allowing static to dissipate.

For Rail Ht.			Screw		Nut		Mounting
Single	Double and Quad	Triple	Color	Material	Color	Material	Hole Location	For Screw Size	Fastener Thread Size	Fastener Thread Lg.	Pkg. Qty.		Pkg.
Push-In Nut
40mm	80mm	120mm	Silver	Steel	White	Plastic	Center	No. 12	__	5/8", 3/4", 1"	12	00000000	00000
Spring Nut with Button Head
1 1/2", 40mm	3", 80mm	4 1/2", 120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M8	20mm	4	0000000	0000
Spring-Tab Nut with Button Head
30mm	60mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	12mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M8	16mm	4	00000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M8	20mm	4	00000000	0000
Spring-Loaded Ball Nut with Button Head
20mm	40mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Offset	__	M5	8mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Offset	__	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Offset	__	M8	16mm	4	0000000	0000
40mm	80mm	120mm	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	__	M5	8mm	4	00000000	0000
40mm	80mm	120mm	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	__	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Offset	__	M8	16mm	4	00000000	0000
Nut with Handle and Flanged-Button Head
1", 25mm	2", 50mm	3"	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	__	1/4"-20	1/2"	4	000000000	00000
20mm	40mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	__	M5	8mm	4	0000000	00000
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	__	M8	16mm	4	00000000	00000
45mm	90mm	__	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	__	M8	16mm	4	00000000	00000
Hammer Nut with Stud
30mm	60mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	__	__	M6	22mm	4	0000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	__	__	M8	22mm	4	00000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	__	__	M8	22mm	4	0000000	0000
45mm	90mm	__	Silver	316 Stainless Steel	Silver	316 Stainless Steel	__	__	M8	25mm	1	00000000	0000
Hammer Nut with Button Head
30mm	60mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M8	20mm	4	00000000	0000
45mm	90mm	__	Silver	304 Stainless Steel	Silver	304 Stainless Steel	Center	__	M8	20mm	1	00000000	0000
Hammer Nut with Socket Head
30mm	60mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
40mm	80mm	120mm	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M6	16mm	4	00000000	0000
45mm	90mm	__	Silver	Zinc-Plated Steel	Silver	Zinc-Plated Steel	Center	__	M8	20mm	4	00000000	0000
Single Nut with Handle and Button Head
40mm	80mm	120mm	Black	Zinc-Plated Steel	Black	Zinc-Plated Steel	Offset	__	M6	16mm	4	0000000	00000

Hoist Ring Assortments—For Lifting

Assortment

Hoist Ring Assembly (Retaining Ring Not Pictured)

180° Pivot

360° Swivel

Keep on hand all the parts needed to assemble custom hoist rings. Ideal for angular lifting, these hoist rings will withstand stresses that bend or break eyebolts. The base of these hoist rings will swivel 360° to compensate for pitch, roll, and sway when lifting heavy or unbalanced loads. The shackle will pivot 180° front to back. All parts have a black oxide finish for mild corrosion resistance.

Install the base of these hoist rings flush to your mounting surface. Use a torque wrench to tighten to the recommended torque stamped on the ring.

Note: Capacities listed are for vertical lifting only. As the lift angle changes from vertical, the amount of weight the hoist ring can lift is significantly reduced. For example, when lifting a 1,000 lb. load at a 45° angle, you must choose a hoist ring with a capacity of at least 1,400 lbs. Do not use at an angle less than 30°.

Warning: Never use to lift people or items over people.

Black-Oxide Steel
Number of Pieces	Thread Size	Movement	Includes	Specifications Met		Each
104	M12 M16 M20 M24 M30	180° Pivot and 360° Swivel	Four 3/4" Dia. Shackles Four 1" Dia. Shackles Four M12 × 1.75 mm Bolts for 3/4" Dia. Shackle—2,310 lbs. Capacity and 19 mm Thread Lg. Four M16 × 2 mm Bolts for 3/4" Dia. Shackle—4,180 lbs. Capacity and 29 mm Thread Lg. Four M20 × 2.5 mm Bolts for 3/4" Dia. Shackle—4,730 lbs. Capacity and 34 mm Thread Lg. Four M20 × 2.5 mm Bolts for 1" Dia. Shackle—6,610 lbs. Capacity and 32 mm Thread Lg. Four M24 × 3 mm Bolts for 1" Dia. Shackle—9,250 lbs. Capacity and 37 mm Thread Lg. Four M30 × 3.5 mm Bolts for 1" Dia. Shackle—9,250 lbs. Capacity and 38 mm Thread Lg. 24 Bushings 24 Retaining Rings 24 Washers	ASME B30.26	0000000	000000000