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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 (USD) 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: $8.20 312In Stock New At Mouser	Mfr. Part No. M300-3250396M2 Mouser Part No 855-M300-3250396M2 New At Mouser	Harwin	Headers & Wire Housings M300 3+3 Pos. Male DIL Cable Housing, Jackscrew Panel Mount	Datasheet	312In Stock	$8.20 $6.97 $6.95 $6.76 View $6.27 $5.72 $5.17	Min.: 1 Mult.: 1
Headers & Wire Housings M300 5+5 Pos Female Vertical Conn M300-3241096M2 Harwin 1: $11.51 107In Stock	Mfr. Part No. M300-3241096M2 Mouser Part No 855-M300-3241096M2	Harwin	Headers & Wire Housings M300 5+5 Pos Female Vertical Conn	Datasheet	107In Stock	$11.51 $9.78 $9.52 $9.28 View $9.03 $7.44 $6.89	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R, ML VRT HDR PCTL W/JSCR M300-0010045 Harwin 1: $2.03 37,498In Stock	Mfr. Part No. M300-0010045 Mouser Part No 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	37,498In Stock	$2.03 $1.73 $1.55 $1.46 View $1.36 $1.30 $1.25 $1.18 $1.17	Min.: 1 Mult.: 1
Headers & Wire Housings 3mm Pitch Male Plug 22 AWG Straight Crimp Power Contact M300-1020045 Harwin 1: $1.53 25,717In Stock 21,390Expected 08/12/2026	Mfr. Part No. M300-1020045 Mouser Part No 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 08/12/2026	$1.53 $1.34 $1.25 $1.19 View $1.07 $1.02 $1.01 $0.952	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R FM VERT HDR PC TAIL M300-2240696F2 Harwin 1: $8.14 2,758In Stock 1,755Expected 15/12/2026	Mfr. Part No. M300-2240696F2 Mouser Part No 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 15/12/2026	$8.14 $6.92 $6.49 $6.18 View $5.89 $5.52 $5.51 $5.39	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY FEMAL PC TAIL DIL M300-2241096F2 Harwin 1: $7.85 3,040In Stock	Mfr. Part No. M300-2241096F2 Mouser Part No 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	$7.85 $7.12 $6.46 $6.24 View $5.87 $5.51 $5.47 $5.22	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R FM VERT HDR PC TAIL M300-2250396F2 Harwin 1: $7.22 6,896In Stock	Mfr. Part No. M300-2250396F2 Mouser Part No 855-M300-2250396F2	Harwin	Headers & Wire Housings M300, 3MM, 3P 1R FM VERT HDR PC TAIL Learn More about Harwin m300 headers wirehousings	Datasheet	6,896In Stock	$7.22 $6.14 $5.76 $5.49 View $5.22 $4.89 $4.66 $4.44	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R MALE HSG W/JSCREW M300-MV30645M1 Harwin 1: $10.81 2,606In Stock	Mfr. Part No. M300-MV30645M1 Mouser Part No 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	$10.81 $9.13 $9.08 $9.01 View $7.82 $7.75 $7.02 $6.57 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings M300, FM CNT LG BORE SCKT 18-20 AWG AU M300-0020045 Harwin 1: $2.28 6,363In Stock 45,800On Order	Mfr. Part No. M300-0020045 Mouser Part No 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. No: M300-0020045 Stock: 6,363 Can Dispatch Immediately On Order: 9,000 Expected 15/12/2026 12,900 Expected 22/12/2026 23,900 Expected 09/03/2027 Factory Lead Time: 7 Weeks	$2.28 $1.94 $1.74 $1.65 View $1.53 $1.48 $1.27 $1.23	Min.: 1 Mult.: 1
Headers & Wire Housings M300, FM CNT SM BORE SCKT 22 AWG AU M300-1010045 Harwin 1: $1.59 4,011In Stock 3,100Expected 04/11/2026	Mfr. Part No. M300-1010045 Mouser Part No 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 04/11/2026	$1.59 $1.35 $1.20 $1.14 View $1.07 $0.988 $0.947 $0.939 $0.914	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R FML HSG W/JSCREW M300-3250396M1 Harwin 1: $4.89 867In Stock 2,830On Order	Mfr. Part No. M300-3250396M1 Mouser Part No 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. No: M300-3250396M1 Stock: 867 Can Dispatch Immediately On Order: 1,480 Expected 09/11/2026 1,350 Expected 17/11/2026 Factory Lead Time: 7 Weeks	$4.89 $4.15 $3.89 $3.70 View $3.53 $3.31 $3.15 $3.01 $2.81	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 3P 1R MALE HSG W/JSCREW M300-MV10345M1 Harwin 1: $8.26 1,599In Stock 1,908Expected 12/01/2027	Mfr. Part No. M300-MV10345M1 Mouser Part No 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 12/01/2027	$8.26 $6.99 $6.96 $6.86 View $5.98 $5.92 $5.37 $5.12	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY MALE CRIMP HSG WJS DIL M300-MV31045M1 Harwin 1: $15.07 1,208In Stock 999Expected 05/01/2027	Mfr. Part No. M300-MV31045M1 Mouser Part No 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 05/01/2027	$15.07 $12.47 $10.99 $9.87 View $9.40 Quote	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10 WAY FEMALE CRIMP HSG WJS M300-3241096M1 Harwin 1: $9.88 34In Stock 390On Order	Mfr. Part No. M300-3241096M1 Mouser Part No 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. No: M300-3241096M1 Stock: 34 Can Dispatch Immediately On Order: 195 Expected 01/12/2026 195 Expected 02/02/2027 Factory Lead Time: 9 Weeks	$9.88 $8.39 $7.87 $7.49 View $7.13 $6.69 $6.37 $6.06	Min.: 1 Mult.: 1
Power to the Board M300, 3MM, 3P 1R, ML VRT HDR PCTL W/JSCR M300-FV3064500 Harwin 1: $15.90 118In Stock	Mfr. Part No. M300-FV3064500 Mouser Part No 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	118In Stock	$15.90 $13.34 $13.30 $13.19 View $11.42 $11.12 $10.24 $9.75	Min.: 1 Mult.: 1
Power to the Board M300 10 SIL VERTICAL SMT HEADER TIN M300-FV3104500 Harwin 1: $24.31 3In Stock 162On Order	Mfr. Part No. M300-FV3104500 Mouser Part No 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. No: M300-FV3104500 Stock: 3 Can Dispatch Immediately On Order: 72 Expected 12/01/2027 90 Expected 02/03/2027 Factory Lead Time: 15 Weeks	$24.31 $21.18 $20.56 $18.66 View $18.35 $16.74	Min.: 1 Mult.: 1
Headers & Wire Housings M300, 3MM, 6P 2R FML HSG W/JSCREW M300-3240696M1 Harwin 1: $5.74 2,060On Order	Mfr. Part No. M300-3240696M1 Mouser Part No 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. No: M300-3240696M1 Stock: 0 On Order: 1,545 Expected 05/01/2027 515 Expected 12/01/2027 Factory Lead Time: 9 Weeks	$5.74 $5.02 $4.63 $4.50 View $4.27 $3.97 $3.80 $3.56 $3.44	Min.: 1 Mult.: 1
Headers & Wire Housings M300 10+10 Pos. Female DIL Vertical SMT Conn. (T+R) M300-3240696M2 Harwin 1: $7.44 1,936On Order	Mfr. Part No. M300-3240696M2 Mouser Part No 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. No: M300-3240696M2 Stock: 0 On Order: 136 Expected 24/11/2026 500 Expected 01/12/2026 1,300 Expected 05/01/2027 Factory Lead Time: 9 Weeks	$7.44 $6.33 $5.93 $5.65 View $5.37 $5.11 $5.04	Min.: 1 Mult.: 1
Power to the Board M300 Single Ended Cable Assembly, Female, 20 AWG, 100 Pos M300-FV1034500 Harwin 1: $13.43 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. M300-FV1034500 Mouser Part No 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	$13.43 $11.36 $11.35 $11.10 View $9.72 $9.53 $8.72 $8.30	Min.: 1 Mult.: 1

M300 3.00mm Pitch Headers & Wire Housings

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