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M300 3.00mm Pitch Headers & Wire Housings

Harwin M300 3.00mm Pitch Headers and Wire Housings are a range of male and female, rectangular, fully shrouded, unsealed connectors with a temperature range of -65°C to +175°C. The M300 contains 3-contact Single Row and 6- or 10-contact Double Row connectors, capable of board-to-board, cable-to-board, and cable-to-cable configurations. Hard acid gold-plated (98% purity) for high performance and long service life, the cable contacts are barrel-crimp style and are replaceable in the housing. The cable housings have a low-profile potting wall to allow for back-potting that provides additional strain relief and some sealing.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.
Headers & Wire Housings M300 3+3 Pos. Male DIL Cable Housing, Jackscrew Panel Mount M300-3250396M2 Harwin 1: S/31.92 312In Stock New At Mouser	Mfr. Part # M300-3250396M2 Mouser Part # 855-M300-3250396M2 New At Mouser	Harwin	Headers & Wire Housings M300 3+3 Pos. Male DIL Cable Housing, Jackscrew Panel Mount	Datasheet	312In Stock	S/31.92 S/27.13 S/27.05 S/26.31 View S/24.41 S/22.27 S/20.12	Min.: 1 Mult.: 1
Headers & Wire Housings M300 5+5 Pos Female Vertical Conn M300-3241096M2 Harwin 1: S/44.80 107In Stock	Mfr. Part # M300-3241096M2 Mouser Part # 855-M300-3241096M2	Harwin	Headers & Wire Housings M300 5+5 Pos Female Vertical Conn	Datasheet	107In Stock	S/44.80 S/38.07 S/37.06 S/36.12 View S/35.15 S/28.96 S/26.82	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R, ML VRT HDR PCTL W/JSCR M300-0010045 Harwin 1: S/7.90 37,468In Stock	Mfr. Part # M300-0010045 Mouser Part # 855-M300-0010045	Harwin	Headers & Wire Housings M300, 3MM, 6P 2R, ML VRT HDR PCTL W/JSCR Learn More about Harwin m300 headers wirehousings	Datasheet	37,468In Stock	S/7.90 S/6.73 S/6.03 S/5.68 View S/5.29 S/5.06 S/4.87 S/4.59 S/4.55	Min.: 1 Mult.: 1
Headers & Wire Housings 3mm Pitch Male Plug 22 AWG Straight Crimp Power Contact M300-1020045 Harwin 1: S/5.96 25,717In Stock 21,390Expected 12/8/2026	Mfr. Part # M300-1020045 Mouser Part # 855-M300-1020045	Harwin	Headers & Wire Housings 3mm Pitch Male Plug 22 AWG Straight Crimp Power Contact Learn More about Harwin m300 headers wirehousings	Datasheet	25,717In Stock 21,390Expected 12/8/2026	S/5.96 S/5.22 S/4.87 S/4.63 View S/4.16 S/3.97 S/3.93 S/3.71	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R FM VERT HDR PC TAIL M300-2240696F2 Harwin 1: S/31.68 2,758In Stock 1,755Expected 12/15/2026	Mfr. Part # M300-2240696F2 Mouser Part # 855-M300-2240696F2	Harwin	Headers & Wire Housings M300, 3MM, 6P 2R FM VERT HDR PC TAIL Learn More about Harwin m300 headers wirehousings	Datasheet	2,758In Stock 1,755Expected 12/15/2026	S/31.68 S/26.94 S/25.26 S/24.06 View S/22.93 S/21.49 S/21.45 S/20.98	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY FEMAL PC TAIL DIL M300-2241096F2 Harwin 1: S/30.56 3,040In Stock	Mfr. Part # M300-2241096F2 Mouser Part # 855-M300-2241096F2	Harwin	Headers & Wire Housings M300 10 WAY FEMAL PC TAIL DIL Learn More about Harwin m300 headers wirehousings	Datasheet	3,040In Stock	S/30.56 S/27.71 S/25.15 S/24.29 View S/22.85 S/21.45 S/21.29 S/20.32	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R FM VERT HDR PC TAIL M300-2250396F2 Harwin 1: S/28.10 6,881In Stock	Mfr. Part # M300-2250396F2 Mouser Part # 855-M300-2250396F2	Harwin	Headers & Wire Housings M300, 3MM, 3P 1R FM VERT HDR PC TAIL Learn More about Harwin m300 headers wirehousings	Datasheet	6,881In Stock	S/28.10 S/23.90 S/22.42 S/21.37 View S/20.32 S/19.03 S/18.14 S/17.28	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R MALE HSG W/JSCREW M300-MV30645M1 Harwin 1: S/42.08 2,606In Stock	Mfr. Part # M300-MV30645M1 Mouser Part # 855-M300-MV30645M1	Harwin	Headers & Wire Housings M300, 3MM, 6P 2R MALE HSG W/JSCREW Learn More about Harwin m300 headers wirehousings	Datasheet	2,606In Stock	S/42.08 S/35.54 S/35.34 S/35.07 View S/30.44 S/30.17 S/27.33 S/25.57 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings M300, FM CNT LG BORE SCKT 18-20 AWG AU M300-0020045 Harwin 1: S/8.87 6,363In Stock 45,800On Order	Mfr. Part # M300-0020045 Mouser Part # 855-M300-0020045	Harwin	Headers & Wire Housings M300, FM CNT LG BORE SCKT 18-20 AWG AU Learn More about Harwin m300 headers wirehousings	Datasheet	6,363In Stock 45,800On Order On Order Ship Dates Mfr. #: M300-0020045 Stock: 6,363 Can Ship Immediately On Order: 9,000 Expected 12/15/2026 12,900 Expected 12/22/2026 23,900 Expected 3/9/2027 Factory Lead-Time: 7 Weeks	S/8.87 S/7.55 S/6.77 S/6.42 View S/5.96 S/5.76 S/4.94 S/4.79	Min.: 1 Mult.: 1
Headers & Wire Housings M300, FM CNT SM BORE SCKT 22 AWG AU M300-1010045 Harwin 1: S/6.19 4,011In Stock 3,100Expected 11/4/2026	Mfr. Part # M300-1010045 Mouser Part # 855-M300-1010045	Harwin	Headers & Wire Housings M300, FM CNT SM BORE SCKT 22 AWG AU Learn More about Harwin m300 headers wirehousings	Datasheet	4,011In Stock 3,100Expected 11/4/2026	S/6.19 S/5.25 S/4.67 S/4.44 View S/4.16 S/3.85 S/3.69 S/3.66 S/3.56	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R FML HSG W/JSCREW M300-3250396M1 Harwin 1: S/19.03 867In Stock 2,830On Order	Mfr. Part # M300-3250396M1 Mouser Part # 855-M300-3250396M1	Harwin	Headers & Wire Housings M300, 3MM, 3P 1R FML HSG W/JSCREW Learn More about Harwin m300 headers wirehousings	Datasheet	867In Stock 2,830On Order On Order Ship Dates Mfr. #: M300-3250396M1 Stock: 867 Can Ship Immediately On Order: 1,480 Expected 11/9/2026 1,350 Expected 11/17/2026 Factory Lead-Time: 7 Weeks	S/19.03 S/16.15 S/15.14 S/14.40 View S/13.74 S/12.88 S/12.26 S/11.72 S/10.94	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R MALE HSG W/JSCREW M300-MV10345M1 Harwin 1: S/32.15 1,599In Stock 1,908Expected 1/12/2027	Mfr. Part # M300-MV10345M1 Mouser Part # 855-M300-MV10345M1	Harwin	Headers & Wire Housings M300, 3MM, 3P 1R MALE HSG W/JSCREW Learn More about Harwin m300 headers wirehousings	Datasheet	1,599In Stock 1,908Expected 1/12/2027	S/32.15 S/27.21 S/27.09 S/26.70 View S/23.28 S/23.04 S/20.90 S/19.93	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY MALE CRIMP HSG WJS DIL M300-MV31045M1 Harwin 1: S/58.66 1,208In Stock 999Expected 1/5/2027	Mfr. Part # M300-MV31045M1 Mouser Part # 855-M300-MV31045M1	Harwin	Headers & Wire Housings M300 10 WAY MALE CRIMP HSG WJS DIL Learn More about Harwin m300 headers wirehousings	Datasheet	1,208In Stock 999Expected 1/5/2027	S/58.66 S/48.54 S/42.78 S/38.42 View S/36.59 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY FEMALE CRIMP HSG WJS M300-3241096M1 Harwin 1: S/38.46 34In Stock 390On Order	Mfr. Part # M300-3241096M1 Mouser Part # 855-M300-3241096M1	Harwin	Headers & Wire Housings M300 10 WAY FEMALE CRIMP HSG WJS Learn More about Harwin m300 headers wirehousings	Datasheet	34In Stock 390On Order On Order Ship Dates Mfr. #: M300-3241096M1 Stock: 34 Can Ship Immediately On Order: 195 Expected 12/1/2026 195 Expected 2/2/2027 Factory Lead-Time: 9 Weeks	S/38.46 S/32.66 S/30.63 S/29.15 View S/27.75 S/26.04 S/24.80 S/23.59	Min.: 1 Mult.: 1
Power to the Board M300, 3MM, 3P 1R, ML VRT HDR PCTL W/JSCR M300-FV3064500 Harwin 1: S/61.89 98In Stock	Mfr. Part # M300-FV3064500 Mouser Part # 855-M300-FV3064500	Harwin	Power to the Board M300, 3MM, 3P 1R, ML VRT HDR PCTL W/JSCR Learn More about Harwin m300 headers wirehousings	Datasheet	98In Stock	S/61.89 S/51.93 S/51.77 S/51.34 View S/44.45 S/43.28 S/39.86 S/37.95	Min.: 1 Mult.: 1
Power to the Board M300 10 SIL VERTICAL SMT HEADER TIN M300-FV3104500 Harwin 1: S/94.63 3In Stock 162On Order	Mfr. Part # M300-FV3104500 Mouser Part # 855-M300-FV3104500	Harwin	Power to the Board M300 10 SIL VERTICAL SMT HEADER TIN Learn More about Harwin m300 headers wirehousings	Datasheet	3In Stock 162On Order On Order Ship Dates Mfr. #: M300-FV3104500 Stock: 3 Can Ship Immediately On Order: 72 Expected 1/12/2027 90 Expected 3/2/2027 Factory Lead-Time: 15 Weeks	S/94.63 S/82.44 S/80.03 S/72.63 View S/71.43 S/65.16	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R FML HSG W/JSCREW M300-3240696M1 Harwin 1: S/22.34 2,060On Order	Mfr. Part # M300-3240696M1 Mouser Part # 855-M300-3240696M1	Harwin	Headers & Wire Housings M300, 3MM, 6P 2R FML HSG W/JSCREW Learn More about Harwin m300 headers wirehousings	Datasheet	2,060On Order On Order Ship Dates Mfr. #: M300-3240696M1 Stock: 0 On Order: 1,545 Expected 1/5/2027 515 Expected 1/12/2027 Factory Lead-Time: 9 Weeks	S/22.34 S/19.54 S/18.02 S/17.52 View S/16.62 S/15.45 S/14.79 S/13.86 S/13.39	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10+10 Pos. Female DIL Vertical SMT Conn. (T+R) M300-3240696M2 Harwin 1: S/28.96 1,936On Order	Mfr. Part # M300-3240696M2 Mouser Part # 855-M300-3240696M2	Harwin	Headers & Wire Housings M300 10+10 Pos. Female DIL Vertical SMT Conn. (T+R)	Datasheet	1,936On Order On Order Ship Dates Mfr. #: M300-3240696M2 Stock: 0 On Order: 136 Expected 11/24/2026 500 Expected 12/1/2026 1,300 Expected 1/5/2027 Factory Lead-Time: 9 Weeks	S/28.96 S/24.64 S/23.08 S/21.99 View S/20.90 S/19.89 S/19.62	Min.: 1 Mult.: 1
Power to the Board M300 Single Ended Cable Assembly, Female, 20 AWG, 100 Pos M300-FV1034500 Harwin 1: S/52.28 Non-Stocked Lead-Time 15 Weeks	Mfr. Part # M300-FV1034500 Mouser Part # 855-M300-FV1034500	Harwin	Power to the Board M300 Single Ended Cable Assembly, Female, 20 AWG, 100 Pos Learn More about Harwin m300 headers wirehousings	Datasheet	Non-Stocked Lead-Time 15 Weeks	S/52.28 S/44.22 S/44.18 S/43.21 View S/37.84 S/37.10 S/33.94 S/32.31	Min.: 1 Mult.: 1

M300 3.00mm Pitch Headers & Wire Housings

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