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SS Slotted Round Head Machine Screw

Machine screws are uniformly threaded fasteners with a blunt end that are used with a threaded nut or threaded into a tapped hole. The round head offers a smooth, rounded head design with a slotted drive. These fasteners are available in 18-8 stainless steel.

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Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsType 2A Threads for Machine Screws

Type 2A Threads for Machine Screws dimensions

ASME B1.1 (2008)
Nominal Size	Threads per Inch	Allowance	Major Diameter		Pitch Diameter			Stress Area in²
			Major Diameter		Pitch Diameter
			Max	Min	Max	Min	Tolerance
#0	80	0.0005	0.0595	0.0563	0.0514	0.0496	0.001762	0.00180
#1	64	0.0006	0.0724	0.0686	0.0623	0.0603	0.001970	0.00263
#1	72	0.0006	0.0724	0.0689	0.0634	0.0615	0.001899	0.00278
#2	56	0.0006	0.0854	0.0813	0.0738	0.0717	0.002127	0.00370
#2	64	0.0006	0.0854	0.0816	0.0753	0.0733	0.002040	0.00394
#3	48	0.0007	0.0983	0.0938	0.0848	0.0825	0.002302	0.00487
#3	56	0.0007	0.0983	0.0942	0.0867	0.0845	0.002191	0.00523
#4	40	0.0008	0.1112	0.1061	0.0950	0.0925	0.002507	0.00604
#4	48	0.0007	0.1113	0.1068	0.0978	0.0954	0.002361	0.00661
#5	40	0.0008	0.1242	0.1191	0.1080	0.1054	0.002562	0.00796
#5	44	0.0007	0.1243	0.1195	0.1095	0.1070	0.002484	0.00830
#6	32	0.0008	0.1372	0.1312	0.1169	0.1141	0.002820	0.00909
#6	40	0.0008	0.1372	0.1321	0.1210	0.1184	0.002614	0.01015
#8	32	0.0009	0.1631	0.1571	0.1428	0.1399	0.002916	0.01400
#8	36	0.0008	0.1632	0.1577	0.1452	0.1424	0.002804	0.01474
#10	24	0.0010	0.1890	0.1818	0.1619	0.1586	0.003319	0.01750
#10	32	0.0009	0.1891	0.1831	0.1688	0.1658	0.003004	0.02000
#12	24	0.0010	0.2150	0.2078	0.1879	0.1845	0.003400	0.02420
#12	28	0.0010	0.2150	0.2085	0.1918	0.1886	0.003224	0.02580
1/4	20	0.0011	0.2489	0.2408	0.2164	0.2127	0.003731	0.03180
1/4	28	0.0010	0.2490	0.2425	0.2258	0.2225	0.003322	0.03640
5/16	18	0.0012	0.3113	0.3026	0.2752	0.2712	0.004041	0.05240
5/16	24	0.0011	0.3114	0.3042	0.2843	0.2806	0.003660	0.05800
3/8	16	0.0013	0.3737	0.3643	0.3331	0.3287	0.004363	0.07750
3/8	24	0.0011	0.3739	0.3667	0.3468	0.3430	0.003804	0.08780
1/2	13	0.0015	0.4985	0.4876	0.4485	0.4435	0.004965	0.14190
1/2	20	0.0013	0.4987	0.4906	0.4662	0.4619	0.004288	0.15990

Nominal Screw Size	Nominal Screw Length (L) Tolerance
	Up to 1/2 in., incl.	Over 1/2 to 1 in., incl.	Over 1 to 2 in., incl.	Over 2 in.
0 thru 12	-0.02	-0.03	-0.06	-0.09
1/4 thru 3/4	-0.03	-0.03	-0.06	-0.09

All dimensions are in inches.

Dimensional SpecificationsSlotted Round Head for Machine Screws

Slotted Round Head for Machine Screws dimensions

ASME B18.6.3-2013
Nominal Size	A		H		J		T		M		G	N	Phillips Drive Size
	Head Dimensions				Slot Dimensions				Phillips Dimensions
	Head Dimensions				Slot Dimensions				Phillips Dimensions
	Diameter		Height		Width		Depth		Diameter		Depth	Width
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
#2	0.162	0.146	0.069	0.059	0.031	0.023	0.048	0.037	0.100	0.087	0.053	0.017	1
#3	0.187	0.169	0.078	0.067	0.035	0.027	0.053	0.040	0.109	0.096	0.062	0.018	1
#4	0.211	0.193	0.086	0.075	0.039	0.031	0.058	0.044	0.118	0.105	0.072	0.019	1
#5	0.236	0.217	0.095	0.083	0.043	0.035	0.063	0.047	0.154	0.141	0.074	0.027	2
#6	0.260	0.240	0.103	0.091	0.048	0.039	0.068	0.051	0.162	0.149	0.084	0.027	2
#8	0.309	0.287	0.120	0.107	0.054	0.045	0.077	0.058	0.178	0.165	0.101	0.030	2
#10	0.359	0.334	0.137	0.123	0.060	0.050	0.087	0.065	0.195	0.182	0.119	0.031	2
#12	0.408	0.382	0.153	0.139	0.067	0.056	0.096	0.073	0.249	0.236	0.125	0.032	3
1/4	0.472	0.443	0.175	0.160	0.075	0.064	0.109	0.082	0.268	0.255	0.147	0.034	3
5/16	0.590	0.557	0.216	0.198	0.084	0.072	0.132	0.099	0.308	0.295	0.187	0.040	3
3/8	0.708	0.670	0.256	0.237	0.094	0.081	0.155	0.117	0.387	0.374	0.228	0.064	4
1/2	0.813	0.766	0.355	0.332	0.106	0.091	0.211	0.159	0.416	0.403	0.256	0.068	4

All dimensions are in inches.

SS Slotted Round Head Machine Screw

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Diameter Length Item # Availability Price Quantity UOM

3/16

MRSS 80018

In Stock

$0.02002/EA

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#8-32 X 3/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.02002/EA

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In Stock

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Quantity	Price
Quantity	Price
1	$0.02002/EA
1730	$0.01867/EA
6900	$0.01763/EA
27590	$0.01199/EA

1/4

MRSS 80025

In Stock

$0.07281/EA

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#8-32 X 1/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.07281/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.07281/EA
1620	$0.06789/EA
6460	$0.0641/EA
25810	$0.04361/EA

5/16

MRSS 80031

In Stock

$0.04005/EA

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#8-32 X 5/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.04005/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.04005/EA
1430	$0.03734/EA
5720	$0.03526/EA
22860	$0.02399/EA

3/8

MRSS 80037

In Stock

$0.05687/EA

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#8-32 X 3/8 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.05687/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.05687/EA
1360	$0.05302/EA
5410	$0.05007/EA
21630	$0.03406/EA

7/16

MRSS 80043

In Stock

$0.04005/EA

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#8-32 X 7/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.04005/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.04005/EA
1250	$0.03734/EA
5000	$0.03526/EA
20000	$0.02399/EA

1/2

MRSS 80050

In Stock

$0.18266/EA

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#8-32 X 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.18266/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.18266/EA
1170	$0.17031/EA
4660	$0.16083/EA
18610	$0.1094/EA

3/4

MRSS 80075

In Stock

$0.09275/EA

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#8-32 X 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.09275/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.09275/EA
1890	$0.08648/EA
7550	$0.08166/EA
33970	$0.05555/EA

MRSS 80100

In Stock

$0.10168/EA

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#8-32 X 1 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.10168/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.10168/EA
1500	$0.09481/EA
5980	$0.08953/EA
26870	$0.0609/EA

1 1/4

MRSS 80125

In Stock

$0.14149/EA

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#8-32 X 1 1/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.14149/EA

Qty

In Stock

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Quantity	Price
Quantity	Price
1	$0.14149/EA
1340	$0.13193/EA
5340	$0.12458/EA
24000	$0.08474/EA

1 1/2

MRSS 80150

In Stock

$0.16019/EA

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#8-32 X 1 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.16019/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.16019/EA
1130	$0.14937/EA
4500	$0.14104/EA
20230	$0.09595/EA

1 3/4

MRSS 80175

In Stock

$0.0801/EA

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#8-32 X 1 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.0801/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.0801/EA
970	$0.07468/EA
3850	$0.07052/EA
17310	$0.04797/EA

MRSS 80200

In Stock

$0.34041/EA

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#8-32 X 2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.34041/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.34041/EA
880	$0.3174/EA
3510	$0.29972/EA
15790	$0.20389/EA

2 1/2

MRSS 80250

In Stock

$0.31826/EA

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#8-32 X 2 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.31826/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.31826/EA
760	$0.29675/EA
3010	$0.28022/EA
13540	$0.19062/EA

2 3/4

MRSS 80275

In Stock

$1.02747/EA

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#8-32 X 2 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$1.02747/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.02747/EA
700	$0.95803/EA
2800	$0.90465/EA
12590	$0.6154/EA

MRSS 80300

In Stock

$0.78967/EA

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#8-32 X 3 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.78967/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.78967/EA
650	$0.7363/EA
2590	$0.69528/EA
11620	$0.47297/EA

3 1/2

MRSS 80350

In Stock

$0.93608/EA

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#8-32 X 3 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$0.93608/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.93608/EA
530	$0.87282/EA
2120	$0.82419/EA
9530	$0.56066/EA

MRSS 80400

3-5 Working Days

$1.47938/EA

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#8-32 X 4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

$1.47938/EA

Qty

3-5 Working Days

Product Detail

Quantity	Price
Quantity	Price
1	$1.47938/EA
480	$1.37939/EA
1920	$1.30254/EA
8620	$0.88606/EA

SS Slotted Round Head Machine Screw

Technical Data

Dimensional Specifications

Dimensional SpecificationsType 2A Threads for Machine Screws

Dimensional SpecificationsSlotted Round Head for Machine Screws

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Grade

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Head Diam

#8-32 X 3/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 5/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 3/8 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 7/16 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1 1/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 1 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 2 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 2 3/4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 3 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 3 1/2 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW

#8-32 X 4 STAINLESS STEEL SLOTTED ROUND HEAD MACHINE SCREW