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B1821 Coarse Thread Bolts

Military Standard ASME B18.2.1.BH

B1821 Coarse Thread Bolts are hex cap screws with a UNC-2A Coarse Thread. The series has many options for length and thread diameter as well as features such as drilled or undrilled heads. B1821 Bolts adhere to strict military standards for material and construction. B1821 steel bolts have a tensile strength of 150,000 psi which is equivalent to Grade 8 steel screws. B1821 Bolts are cadmium plated to resist corrosion in wet environments. Length is measured from under the head. Material is Alloy Steel to ASTM A354BD. Finish is Zinc Yellow Plating to ASTM B633.

B1821 Hex Bolts - ASME B18.2.1.BH Standard
Military Standard ASME B18.2.1 - B1821 Series Bolts
"

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B1821 Series Coarse Thread - Undrilled
LengthPart
Number		NATO Stock Number
NSN		Replaced
MS90728		Replaced
NSN
1/4"-20 UNC-2A Coarse Thread
3/8"B1821BH025C038N5305-00-071-2508 Buy B1821BH025C038NMS90728-1
7/16"B1821BH025C044N5305-00-071-2507 Buy B1821BH025C044NMS90728-2
1/2"B1821BH025C050N5305-01-648-4023 Buy B1821BH025C050NMS90728-35305-00-071-2506
9/16"B1821BH025C056N5305-00-225-3844 Buy B1821BH025C056NMS90728-4
5/8"B1821BH025C063N5305-00-068-7837 Buy B1821BH025C063NMS90728-5
3/4"B1821BH025C075N5305-00-068-0508 Buy B1821BH025C075NMS90728-6
7/8"B1821BH025C088N5305-00-071-2505 Buy B1821BH025C088NMS90728-7
1"B1821BH025C100N5305-00-225-3843 Buy B1821BH025C100NMS90728-8
1-1/8"B1821BH025C112N5305-01-451-6897
1-1/8"B1821BH025C113N5305-00-225-3842 Buy B1821BH025C113NMS90728-9
1-1/4"B1821BH025C125N5305-00-068-0509 Buy B1821BH025C125NMS90728-10
1-3/8"B1821BH025C138N5305-00-225-3841 Buy B1821BH025C138NMS90728-11
1-1/2"B1821BH025C150N5305-00-071-2509 Buy B1821BH025C150NMS90728-12
1-3/4"B1821BH025C175N5305-00-071-2510 Buy B1821BH025C175NMS90728-13
2"B1821BH025C200N5305-01-667-2967 Buy B1821BH025C200NMS90728-145305-00-071-2511
2-1/4"B1821BH025C225N5305-00-071-2512 Buy B1821BH025C225NMS90728-15
2-1/2"B1821BH025C250N5305-00-071-2513 Buy B1821BH025C250NMS90728-16
2-3/4"B1821BH025C275N5305-00-071-2514 Buy B1821BH025C275NMS90728-17
3"B1821BH025C300N5305-00-071-2515 Buy B1821BH025C300NMS90728-18
3-1/4"B1821BH025C325N5305-00-267-8963 Buy B1821BH025C325NMS90728-195305-00-267-8986
3-1/2"B1821BH025C350N5305-00-267-8964 Buy B1821BH025C350NMS90728-205305-00-267-8987
3-3/4"B1821BH025C375N5305-00-267-8965 Buy B1821BH025C375NMS90728-21
4"B1821BH025C400N5305-00-267-8966 Buy B1821BH025C400NMS90728-225305-00-267-9689
4-1/4"B1821BH025C425N5305-00-267-8967 Buy B1821BH025C425NMS90728-235305-00-267-9690
4-1/2"B1821BH025C450N5305-00-267-8968 Buy B1821BH025C450NMS90728-245305-01-202-2676
4-3/4"B1821BH025C475N5305-00-267-8969 Buy B1821BH025C475NMS90728-255305-00-267-9692
5"B1821BH025C500N5305-00-267-8970 Buy B1821BH025C500NMS90728-265305-00-267-9693
8-3/4"B1821BH025C875N5305-01-527-8539
5/16"-18 UNC-2A Coarse Thread
3/8"B1821BH031C038N5306-00-226-4820 Buy B1821BH031C038NMS90728-27
7/16"B1821BH031C044N5305-00-226-4821 Buy B1821BH031C044NMS90728-28
1/2"B1821BH031C050N5306-00-226-4822 Buy B1821BH031C050NMS90728-29
9/16"B1821BH031C056N5306-00-226-4823 Buy B1821BH031C056NMS90728-30
5/8"B1821BH031C063N5306-00-226-4824 Buy B1821BH031C063NMS90728-31
3/4"B1821BH031C075N5305-00-226-4825 Buy B1821BH031C075NMS90728-325305-01-359-8002
7/8"B1821BH031C088N5306-00-226-4826 Buy B1821BH031C088NMS90728-33
1"B1821BH031C100N5306-00-226-4827 Buy B1821BH031C100NMS90728-34
1-1/8"B1821BH031C113N5306-00-226-4828 Buy B1821BH031C113NMS90728-35
1-1/4"B1821BH031C125N5306-00-226-4829 Buy B1821BH031C125NMS90728-365305-01-669-5097
1-3/8"B1821BH031C138N5306-00-226-4830 Buy B1821BH031C138NMS90728-37
1-1/2"B1821BH031C150N5305-00-226-4831 Buy B1821BH031C150NMS90728-38
1-3/4"B1821BH031C175N5306-01-662-9441 Buy B1821BH031C175NMS90728-395306-00-226-4832
2"B1821BH031C200N5306-00-226-4833 Buy B1821BH031C200NMS90728-405306-01-263-6142
2-1/4"B1821BH031C225N5306-00-226-4834 Buy B1821BH031C225NMS90728-41
2-1/2"B1821BH031C250N5306-00-226-4835
5306-01-584-3766		 Buy B1821BH031C250NMS90728-425306-00-402-2581
2-3/4"B1821BH031C275N5306-00-226-4836 Buy B1821BH031C275NMS90728-435306-01-158-1154
3"B1821BH031C300N5306-00-226-4837 Buy B1821BH031C300NMS90728-44
3-1/4"B1821BH031C325N5306-00-226-4838 Buy B1821BH031C325NMS90728-45
3-1/2"B1821BH031C350N5306-00-226-4839 Buy B1821BH031C350NMS90728-46
3-3/4"B1821BH031C375N5306-00-226-4840 Buy B1821BH031C375NMS90728-475306-27-024-2760
4"B1821BH031C400N5306-00-226-4841 Buy B1821BH031C400NMS90728-48
4-1/4"B1821BH031C425N5306-00-226-4842 Buy B1821BH031C425NMS90728-49
4-1/2"B1821BH031C450N5306-00-226-4843 Buy B1821BH031C450NMS90728-50
4-3/4"B1821BH031C475N5306-00-226-4844 Buy B1821BH031C475NMS90728-51
4-3/4"B1821BH031C488N5306-01-568-4857
5"B1821BH031C500N5306-00-226-4845 Buy B1821BH031C500NMS90728-52
5-1/4""B1821BH031C525N5305-01-608-7911 Buy B1821BH031C525N
5-1/2""B1821BH031C550N5305-01-273-1494 Buy B1821BH031C550N
6-1/2"B1821BH031C650N5306-01-493-4560 Buy B1821BH031C650N
3/8"-16 UNC-2A Coarse Thread
3/8"B1821BH038C038N5305-01-155-4362 Buy B1821BH038C038NMS90728-53
7/16"B1821BH038C044N5305-01-212-4542 Buy B1821BH038C044NMS90728-54
1/2"B1821BH038C050N5305-00-802-2764 Buy B1821BH038C050NMS90728-55
9/16"B1821BH038C056N5305-00-829-1487 Buy B1821BH038C056NMS90728-56
0.62"B1821BH038C062N5305-01-458-1624
5/8"B1821BH038C063N5305-00-721-5492 Buy B1821BH038C063NMS90728-575306-27-021-3710
3/4"B1821BH038C075N5305-00-543-4372
5305-01-448-0958		 Buy B1821BH038C075NMS90728-585305-15-166-1212
7/8"B1821BH038C088N5305-01-140-9118 Buy B1821BH038C088NMS90728-59
1"B1821BH038C100N5305-01-603-2322 Buy B1821BH038C100NMS90728-605305-00-068-0510
1.120"5305-01-407-90065305-00-543-24195305-01-360-3040
1-1/8"B1821BH038C113N5305-00-543-2419 Buy B1821BH038C113NMS90728-615305-01-360-3040
1-1/4"B1821BH038C125N5305-00-068-0511 Buy B1821BH038C125NMS90728-62
1.150"B1821BH038C115N5305-01-459-3098
1.150"B1821BH038C130N5305-01-459-3098
1-3/8"B1821BH038C138N5305-00-688-2111 Buy B1821BH038C138NMS90728-63
1-1/2"B1821BH038C150N5305-00-725-2317 Buy B1821BH038C150NMS90728-64
1-5/8"B1821BH038C163N5305-01-503-9287
1-3/4"B1821BH038C175N5305-00-821-3869 Buy B1821BH038C175NMS90728-65
1-7/8"B1821BH038C188N5305-01-453-8145
2"B1821BH038C200N5305-00-782-9489 Buy B1821BH038C200NMS90728-665306-01-263-6142
2-1/4"B1821BH038C225N5305-00-638-8920 Buy B1821BH038C225NMS90728-67
2-3/8"B1821BH038C238N5305-01-466-7415
2-1/2"B1821BH038C250N5305-00-543-2866 Buy B1821BH038C250NMS90728-685306-00-402-2581
2-3/4"B1821BH038C275N5305-00-781-3926 Buy B1821BH038C275NMS90728-69
3"B1821BH038C300N5305-00-846-5703 Buy B1821BH038C300NMS90728-70
3-1/4"B1821BH038C325N5305-00-808-0864 Buy B1821BH038C325NMS90728-71
3-1/2"B1821BH038C350N5305-00-781-3927 Buy B1821BH038C350NMS90728-72
3-3/4"B1821BH038C375N5305-00-990-8632 Buy B1821BH038C375NMS90728-73
4"B1821BH038C400N5305-00-781-3928 Buy B1821BH038C400NMS90728-74
4-1/4"B1821BH038C425N5305-00-781-3929 Buy B1821BH038C425NMS90728-75
4-1/2"B1821BH038C450N5305-00-857-6886 Buy B1821BH038C450NMS90728-76
4-3/4"B1821BH038C475N5305-00-781-3930 Buy B1821BH038C475NMS90728-77
5"B1821BH038C500N5305-00-964-0503 Buy B1821BH038C500NMS90728-78
5-1/4"B1821BH038C525N5305-01-451-6895 Buy B1821BH038C525N
5-1/2"B1821BH038C550N5305-01-458-1670 Buy B1821BH038C550N
5-3/4"B1821BH038C575N5305-01-446-0767 Buy B1821BH038C575N
6"B1821BH038C600N5305-01-386-9052 Buy B1821BH038C600N
6-1/2"B1821BH038C650N5305-01-475-3158
6-3/4"B1821BH038C675N5305-01-439-2123
7"B1821BH038C700N5305-01-475-3154 Buy B1821BH038C700N
7-1/2"B1821BH038C750N5305-01-475-3364 Buy B1821BH038C750N