91310A100 | High-Strength Class 10.9 Steel Hex Head Screw

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11,746 Products

About Hex Head Screws and Bolts

Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

Steel Hex Head Screw, Nut, and Washer Assortments

Keep a range of hex head screw, nut, and washer sizes on hand for a variety of jobs. The screws in these assortments have heads with six flat sides to keep wrenches and sockets slipping and rounding off the drive.

Length is measured from under the head.

Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.

High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.

Steel—Unfinished steel screws are best for dry environments, since moisture will cause them to rust. They require little surface prep before applying a finish, so you can apply your own paint or coating.

	Hex Head Screws Included	Hex Nuts Included	Split Lock Washers Included	Flat Washers Included	Fastener Strength Grade/Class	Container Type		Each
Medium-Strength Zinc-Plated Steel



	265	1/2"-13 Thread: 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", 3 1/2", and 4" Lg. (90 Pieces)	1/2"-13 Thread (50 Pieces)	For 1/2" Screw Size (60 Pieces)	For 1/2" Screw Size (65 pieces)	SAE Grade 5	Metal Box	91340A116	0000000


	305	M10 × 1.5 mm Thread: 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, and 60 mm Lg. (135 pieces)	M10 × 1.5 mm Thread (45 Pieces)	For M10 Screw Size (60 Pieces)	For M10 Screw Size (65 pieces)	Class 8.8, Class 8	Metal Box	94147A113	00000
	465	M4 × 0.7 mm Thread: 12 mm, 16 mm, 20 mm, and 25 mm Lg. (100 Pieces) M6 × 1 mm Thread: 12 mm, 16 mm, 20 mm, 30 mm, and 40 mm Lg. (100 Pieces) M8 × 1.25 mm Thread: 12 mm, 16 mm, 20 mm, 30 mm, 40 mm, and 50 mm Lg. (75 Pieces) M10 × 1.5 mm Thread: 20 mm, 25 mm, 30 mm, 40 mm, and 50 mm Lg. (40 Pieces)	M4 × 0.7 mm Thread (50 Pieces) M6 × 1 mm Thread (50 Pieces) M8 × 1.25 mm Thread (25 Pieces) M10 × 1.5 mm Thread (25 Pieces)	—	—	Class 8.8, Class 8	Plastic Box	94147A114	00000
	555	3/8"-16 Thread: 3/4", 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", and 3 1/2" Lg. (175 Pieces)	3/8"-16 Thread (120 Pieces)	For 3/8" Screw Size (80 Pieces)	For 3/8" Screw Size (180 pieces)	SAE Grade 5	Metal Box	91340A115	000000
	565	5/16"-18 Thread: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", and 3 1/2" Lg. (215 Pieces)	5/16"-18 Thread (80 Pieces)	For 5/16" Screw Size (120 Pieces)	For 5/16" Screw Size (150 pieces)	SAE Grade 5	Metal Box	91340A114	000000
	600	M8 × 1.25 mm Thread: 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, and 60 mm Lg. (185 pieces)	M8 × 1.25 mm Thread (135 Pieces)	For M8 Screw Size (90 Pieces)	For M8 Screw Size (190 pieces)	Class 8.8, Class 8	Metal Box	94147A112	00000
	615	1/4"-20 Thread: 1/2", 5/8", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", and 3" Lg. (200 Pieces)	1/4"-20 Thread (140 Pieces)	For 1/4" Screw Size (85 Pieces)	For 1/4" Screw Size (190 pieces)	SAE Grade 5	Metal Box	91340A113	00000
	670	M6 × 1 mm Thread: 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, and 60 mm Lg. (325 pieces)	M6 × 1 mm Thread (75 Pieces)	For M6 Screw Size (120 Pieces)	For M6 Screw Size (150 pieces)	Class 8.8, Class 8	Metal Box	94147A111	00000
	910	1/4"-20 Thread: 1/2", 3/4", 1", 1 1/2", and 2" Lg. (115 Pieces) 5/16"-18 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (100 Pieces) 3/8"-16 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (70 Pieces)	1/4"-20 Thread (50 Pieces) 5/16"-18 Thread (50 Pieces) 3/8"-16 Thread (25 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	SAE Grade 5	Metal Box	91340A112	000000
	910	1/4"-28 Thread: 1/2", 3/4", 1", 1 1/2", and 2" Lg. (115 Pieces) 5/16"-24 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (100 Pieces) 3/8"-24 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (70 Pieces)	1/4"-28 Thread (50 Pieces) 5/16"-24 Thread (50 Pieces) 3/8"-24 Thread (25 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	SAE Grade 5	Metal Box	91340A111	000000
	1,020	1/4"-20 Thread: 3/4", 1", 1 1/2", 2", and 2 1/2" Lg. (100 Pieces) 5/16"-18 Thread: 3/4", 1", 1 1/2", 2", and 2 1/2" Lg. (90 Pieces) 3/8"-16 Thread: 1", 1 1/2", 2", 2 1/2", and 3" Lg. (55 Pieces) 7/16"-14 Thread: 1", 1 1/2", 2", 2 1/2", and 3" Lg. (40 Pieces) 1/2"-13 Thread: 1", 1 1/2", 2", 2 1/2", and 3" Lg. (30 Pieces)	1/4"-20 Thread (50 Pieces) 5/16"-18 Thread (50 Pieces) 3/8"-16 Thread (25 Pieces) 7/16"-14 Thread (20 Pieces) 1/2"-13 Thread (10 Pieces)	For 1/4" Screw Size (50 Pieces) For 5/16" Screw Size (50 Pieces) For 3/8" Screw Size (50 Pieces) For 7/16" Screw Size (50 Pieces) For 1/2" Screw Size (25 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces) For 7/16" Screw Size (50 Pieces) For 1/2" Screw Size (25 Pieces)	SAE Grade 5	Metal Drawer Cabinet	91308A220	000000


	2,295	M4 × 0.7 mm Thread: 10 mm, 16 mm, 20 mm, 25 mm, 30 mm, and 35 mm Lg. (300 Pieces) M5 × 0.8 mm Thread: 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, and 40 mm Lg. (300 Pieces) M6 × 1 mm Thread: 16 mm, 25 mm, and 30 mm Lg. (75 pieces) M8 × 1.25 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (45 pieces) M10 × 1.5 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (30 pieces) M12 × 1.75 mm Thread: 20 mm, 30 mm, and 60 mm Lg. (15 pieces)	M4 × 0.7 mm Thread (300 Pieces) M5 × 0.8 mm Thread (300 Pieces) M6 × 1 mm Thread (75 Pieces) M8 × 1.25 mm Thread (45 Pieces) M10 × 1.5 mm Thread (30 Pieces) M12 × 1.75 mm Thread (15 Pieces)	For M4 Screw Size (300 Pieces) For M5 Screw Size (300 Pieces) For M6 Screw Size (75 Pieces) For M8 Screw Size (45 Pieces) For M10 Screw Size (30 Pieces) For M12 Screw Size (15 Pieces)	—	Class 8.8, Class 8	Metal Box Plastic Box	98620A100	000000


	Medium-Strength Steel



			2,295	M4 × 0.7 mm Thread: 10 mm, 16 mm, 20 mm, 25 mm, 30 mm, and 35 mm Lg. (300 Pieces) M5 × 0.8 mm Thread: 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, and 40 mm Lg. (300 Pieces) M6 × 1 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (75 Pieces) M8 × 1.25 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (45 pieces) M10 × 1.5 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (30 pieces) M12 × 1.75 mm Thread: 20 mm, 30 mm, and 60 mm Lg. (15 pieces)	M4 × 0.7 mm Thread (300 Pieces) M5 × 0.8 mm Thread (300 Pieces) M6 × 1 mm Thread (75 Pieces) M8 × 1.25 mm Thread (45 Pieces) M10 × 1.5 mm Thread (30 Pieces) M12 × 1.75 mm Thread (15 Pieces)	For M4 Screw Size (300 Pieces) For M5 Screw Size (300 Pieces) For M6 Screw Size (75 Pieces) For M8 Screw Size (45 Pieces) For M10 Screw Size (30 Pieces) For M12 Screw Size (15 Pieces)	—	Class 8.8, Class 8	Metal Box Plastic Box	98620A080	000000


			High-Strength Zinc-Yellow-Chromate-Plated Steel



					240	5/8"-11 Thread: 1", 1 1/2", 1 3/4", 2", 2 1/4", 2 1/2", 3", 3 1/2", and 4" Lg. (85 Pieces)	5/8"-11 Thread (40 Pieces)	For 5/8" Screw Size (50 Pieces)	For 5/8" Screw Size (65 Pieces)	SAE Grade 8	Metal Box	91350A124	000000


					265	1/2"-13 Thread: 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", 3 1/2", and 4" Lg. (90 Pieces)	1/2"-13 Thread (50 Pieces)	For 1/2" Screw Size (60 Pieces)	For 1/2" Screw Size (65 pieces)	SAE Grade 8	Metal Box	91350A123	000000
					295	M10 × 1.5 mm Thread: 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, 60 mm, 70 mm, and 80 mm Lg. (125 pieces)	M10 × 1.5 mm Thread (45 Pieces)	For M10 Screw Size (60 Pieces)	For M10 Screw Size (65 pieces)	Class 10.9, Class 10	Metal Box	94148A213	000000
					555	3/8"-16 Thread: 3/4", 1", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", and 3 1/2" Lg. (175 Pieces)	3/8"-16 Thread (120 Pieces)	For 3/8" Screw Size (80 Pieces)	For 3/8" Screw Size (180 pieces)	SAE Grade 8	Metal Box	91350A122	000000
					600	M8 × 1.25 mm Thread: 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, and 60 mm Lg. (185 pieces)	M8 × 1.25 mm Thread (135 Pieces)	For M8 Screw Size (90 Pieces)	For M8 Screw Size (190 pieces)	Class 10.9, Class 10	Metal Box	94148A212	000000
					615	1/4"-20 Thread: 1/2", 5/8", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", and 3" Lg. (200 Pieces)	1/4"-20 Thread (140 Pieces)	For 1/4" Screw Size (85 Pieces)	For 1/4" Screw Size (190 pieces)	SAE Grade 8	Metal Box	91350A121	000000
					675	M6 × 1 mm Thread: 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, and 60 mm Lg. (330 pieces)	M6 × 1 mm Thread (75 Pieces)	For M6 Screw Size (120 Pieces)	For M6 Screw Size (150 pieces)	Class 10.9, Class 10	Metal Box	94148A211	000000
					910	1/4"-20 Thread: 1/2", 3/4", 1", 1 1/2", and 2" Lg. (115 Pieces) 5/16"-18 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (100 Pieces) 3/8"-16 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (70 Pieces)	1/4"-20 Thread (50 Pieces) 5/16"-18 Thread (50 Pieces) 3/8"-16 Thread (25 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	SAE Grade 8	Metal Box	91350A112	000000
					910	1/4"-28 Thread: 1/2", 3/4", 1", 1 1/2", and 2" Lg. (115 Pieces) 5/16"-24 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (100 Pieces) 3/8"-24 Thread: 3/4", 1", 1 1/4", 1 1/2", and 2" Lg. (70 Pieces)	1/4"-28 Thread (50 Pieces) 5/16"-24 Thread (50 Pieces) 3/8"-24 Thread (25 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	For 1/4" Screw Size (100 Pieces) For 5/16" Screw Size (100 Pieces) For 3/8" Screw Size (50 Pieces)	SAE Grade 8	Metal Box	91350A317	000000


					High-Strength Steel



							575	M6 × 1 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (75 Pieces) M8 × 1.25 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (45 pieces) M10 × 1.5 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (30 pieces) M12 × 1.75 mm Thread: 20 mm, 30 mm, and 40 mm Lg. (15 pieces)	M6 × 1 mm Thread (75 Pieces) M8 × 1.25 mm Thread (45 Pieces) M10 × 1.5 mm Thread (30 Pieces) M12 × 1.75 mm Thread (15 Pieces)	For M6 Screw Size (100 Pieces) For M8 Screw Size (100 Pieces) For M10 Screw Size (30 Pieces) For M12 Screw Size (15 Pieces)	—	Class 10.9, Class 10	Metal Box	91310A100	000000
							High-Strength Class 10.9 Steel Hex Head Screw, Nut, and Washer Assortment, Metric Sizes, 575 Pieces Product Detail QuantityEachIn stock Select a compatible file type: Parasolid